Chemistry Middle School

What are the two major political parties in the United States, now?

Answers

Answer 1

Democrats and Republicans

Answer 2

Republican Party and the Democratic Party

Related Questions

Identify all the correct examples of weather

Answers

Answer:

Here are some correct examples of weather:

Sunny and warm weatherRainy and humid weatherFoggy and cool weatherSnowy and cold weatherWindy and stormy weatherHazy and hot weatherThunderstorms and lightningHurricanes and tornadoesClear and crisp weatherOvercast and dreary weather.

Explanation:

espero te ayude

Is there a list of weather examples that I would choose from?

Which pair of elements would be expected to have similar reactivities?
fluorine (F) and oxygen (O)
bromine (Br) and chlorine (Cl)
carbon (C) and copper (Cu)
sodium (Na) and sulfur (S)

Answers

Answer:bromine & chlorine

Explanation:

Elements with the same number of valence electrons have similar chemical properties. Since bromine and chlorine are in the same group (7A), both are expected to have similar reactivities.

Answer:

yes

Explanation:

What happens to the atoms that make up hydrogen fuel as it burns?

Answers

Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

When hydrogen fuel burns, its atoms combine with oxygen atoms to form water molecules. So the atoms that make up hydrogen fuel become part of the water molecules.

A balloon is filled with 6.5 L of helium gas at 25oC and 1.0 atm. What volume will the balloon have when the temperature is lowered to -25oC and the pressure is increased to 1.5 atm?

Answers

honestly i have no clue. but u can

A weather balloon filled with hydrogen at 1 atm and -27^(h)C has volume equal to 1200 litres. On ascending, it reaches a place where temperture is -23^(h)C and pressure is 0.5 atm.

Explain the energy transformations taking place in the diagram above. There are several.

Answers

the fire is evaporating the water

Answer:

chemical energy from the fire is turned into light and heat energy (thats all i can tell there is)

Explanation:

Please help me por favor :'(

Answers

More volume, takes longer to heat all the molecules.

Which of the following best explains the relationship between peak-to-peak amplitude and semi-amplitude?

Answers

Answer:

A. Semi-amplitude is half the distance of the peak-to-peak amplitude

Explanation:

The correct answer is : The semi-amplitude is half the distance of the peak-to-peak amplitude (option A). The peak-to-peak amplitude is the total distance between the highest positive peak and the lowest negative peak in a waveform. It represents the full range of variation in the amplitude of the waveform.

The peak-to-peak amplitude of a waveform is the measurement of the total distance between the highest positive peak and the lowest negative peak. It provides information about the full range of variations in the amplitude of the waveform. Mathematically, it is calculated by subtracting the minimum value from the maximum value of the waveform.

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Match these items.

1. imprint of plant or animal
original-remains fossil
2. undecayed plant or animal part
carbonized fossil
3. replaced by a mineral
petrified fossil
4. only carbon remains
cleavage
5. mountain
geology
6. from magma
metamorphic
7. from physical and chemical changes
igneous
8. sandstone
print fossil
9. helps identify rocks
landform
10. science of Earth
sedimentary

Answers

1. print fossil

2. carbonized fossil

3. petrified fossil

4. cleavage

5. landform

6. igneous

7. metamorphic

8. print fossil

9. geology

10. sedimentary

The print fossil, original-remains fossil, petrified fossil, carbonized fossil, landform, igneous, metamorphic, sedimentary, cleavage, and geology are the respective matches as given in the question.

Print fossil is imprint of plant or animal and basically known as fossil impression. Original-remains fossil comprises of the original tissues and parts of organism and undecayed plant or animal part. Petrified fossil is replaced by a mineral. Carbonized fossil is only carbon remains. Landform is a mountain. Igneous is from magma.

Metamorphic is from physical and chemical changes. Sedimentary rocks are sandstone. Cleavage helps to identify rocks. Geology is the study of science of earth.

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On this number line, zero represents sea level. Plot the following points based on the description provided by dragging and dropping the dots to the appropriate locations on the number line.

greatest common factor of 8 and 12

where does this go on the number line

Answers

The greatest common factor would be 4
On the number line

The correct Answer is 4

Why do some objects with a greater mass float and some objects with less mass sink?

Answers

Answer: If an object is more dense than water it will sink when it’s in water, and if it is less dense than water it will float.

The density of an object is key. If the object is denser than water it will sink while an object with a lower density tan. Water but a large mass will float

Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.

A. It may change directions.

B. It will move at a constant speed.

C. It may slow down.

D. It may slow down or speed up.

E. It will stay stationary.

Answers

Answer:b

Explanation:

The answer is A, and c

please help will mark brainest

Which frequency of electromagnetism has higher energy and shorter wavelengths that visible light? *

white
ultraviolet
infrared
black

Answers

Answer:

ultraviolet lights have shorter wavelengths and higher frequencies

HELP PLS
4. What would you use iodine to test for?

5. What is involved with the Benedict’s test?

6. Explain how mass and weight differ. Which one would be different on the moon versus on Earth?

Answers

Explanation:

4.iodine would be used to test for sugar

6. mass is constant everywhere while weight differs from place to place due to gravity changes

4. Test for starch - turns blue black if present
5. Test for reducing sugars - mix solution with Benedict’s reagent and put in water bath for ~30 min, greater colour change means more sugars present
6. Mass is scalar quantity relying on magnitude only as it is the measure of matter within an object, whilst weight is how strongly an object is pulled towards an object of greater mass due to gravity

HELP ME ASAP PWEASS!!!
Data Table
On the table below, record your observations before and after the interactions and explain how mass was conserved. Describe the changes in properties that prove a chemical reaction occurred. The first row is an example.

Observations Before Interaction
Observations After Interaction
How was mass conserved?
Proof of a Chemical Reaction
Example: Sugar + Heat
The sugar is in tiny white particles in a pile. Heat is not seen but is implied by the heat source. The pile of sugar in the pot has a mass of 100 grams.
There is a solid, light brown mass at the bottom of the pot. It has a mass of 100 grams.
The mass of the sugar is the same in melted form as it is in solid crystal form.
There was not a chemical reaction. Sugar did not change composition. It only melted. Melting point is a physical property, and this is a physical change.
Steel Wool + Oxygen (Fire)

Egg + Heat

Water + Heat

Zinc + Hydrogen Chloride

Sodium Hydroxide + Copper Sulfate

Answers

Answer:

Steel Wool + Oxygen (Fire) The steel wool is a grayish color and has a rough surface. Oxygen is transparent It looks like a powder, and like if it was rusted steel wool but then broken apart and turned into a powder Well Iron oxide is 7 grams and steel wool combined is 7 grams so you can say that the mass was conserved Yes, this is a chemical change because the steel wool rusted and rust is a chemical change, so iron oxide causes because if a physical change.

Egg + Heat The egg has a yellow yolk in the middle while there is some type of liquid at the border of the yolk, but it is clear, the heat is hot but transparent The egg turned into a delicious food called an omelet what was yolk staid as a liquid but got a tad harder, but the transparent border around it turned white It was conserved because the eggshell was 4 grams and the fried egg is 41 grams It is a chemical change because it results in the formation of new particles, and the chemical bonds break up and new ones are formed.

Water + Heat The water is a clear liquid, while the heat is very hot but transparent The water turned into a type of oxygen -Water Vapor- If 5 g of water becomes a gas it becomes 5 g of water vapor. The mass of the liquid water is simply transferred into the mass of the newly formed water vapor. There was no chemical reaction because the water vapor can be turned back to water also it just changed from a liquid to a gas and did not change its composition

Zinc + Hydrogen Chloride Zinc: a white/silver metallic solid. Hydrogen chloride (dilute hydroelectric acid) is a transparent, colorless liquid with a very low pH (acidic). Zinc "dissolved" in hydrogen chloride, while emitting a colorless gas. The liquid remains a colorless liquid, possibly still having a low pH from the unused acid. The colorless gas collected in a test tube gives a popping sound when ignited with a burning wooden splint, so it is not air embedded in the zinc, nor dissolved in hydroelectric acid. Well although the zinc chloride is 12 grams and not 15 the gas that was released was 3 grams and as we all know 3 + 12 is 15 so you could say that the mass was conserved The production of a new substance (most probable hydrogen) from the reaction of the two reactants. When a few drops of the liquid product are evaporated on a watch glass, a white residue is left. When a few drops of the liquid hydroelectric acid are evaporated on a watch glass, there is no residue. This proves that a new product (hydrogen gas), (white powder, zinc chloride) is produced instead of zinc being physically dissolved in hydroelectric acid.

Sodium Hydroxide + Copper Sulfate Sodium hydroxide is a turbid solution and copper sulfate is in form of bright blue crystals. When their solutions are mixed, a pale blue precipitate of basic copper hydroxide & a solution of neutral salt sodium sulfate will be formed. The sodium hydroxide and the copper sulfate combined to make a total of 67 grams and the product is split because the sodium sulfate is 47 grams and the copper hydroxide is 20 grams but altogether it is still 67 grams so you could say that the mass was conserved The proof of the reaction is the appearance of pale blue precipitates of basic copper hydroxide & a solution of neutral salt sodium sulfate.

Give an example of how you could use different reference frames for the same motion.

Answers

for example, when you see a ball roll down a street, you can tell the ball is moving because the frame of reference is the streets, whatever may be on the side of the roads, or the Earth. All of these are frames of reference. All measurements of motion will be compared to a frame of reference.

To solve this we must be knowing each and every concept related to motion. Therefore, in below given ways we can use different reference frames for the same motion.

What is motion?

Motion is the phenomena in physics when an object shifts positions over time. The variables of distance, speed, displacement, acceleration, velocity, and time are used to compute or characterize motion.

Because the streets are the ball's frame of reference when rolling down the street, rather than whatever might be on the other side of the road or the Earth, you can know the ball is moving. These are all just frames of reference. All motion data will be contrasted with a frame of reference.

Therefore, in below given ways we can use different reference frames for the same motion.

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IF YOU GIVE A LINK OR DON"T ACTUALLY ANSWER THIS QUESTION RIGHT JUST FOR POINTS I WILL REPORT YOUR ANSWER AND YOU

On the way to school, Ellie sat on a bench waiting for her friend. She noticed snow all around her. Later that day, Ellie and her friend walked home and passed the same bench. Ellie's friend said, “There is a puddle in front of the bench. It must have rained while we were in school, creating this puddle.”

Ellie disagreed. She had a different claim about how the puddle formed based on the evidence from her observations. Ellie's evidence was as follows:

The park was covered in snow that morning but not in the afternoon.
Ellie didn’t need her jacket on the way home because it was so warm.
It was sunny all day.
Do you think the puddle was formed from rain? Why or why not?

Answers

Answer:

No, the puddle was formed because of the sun, because if there was snow and it rained then it would have turned slippery or icy

It wasn’t formed by rain because the snow melted by the sun.

Explanation: If Ellie didn’t need a jacket but there was still some snow that means that it snowed the night before and melted today because the temperature became higher not because it rained

Describe the difference between conductors and insulators, give two examples of each.

Answers

Answer:

Conductors allow electricity to pass through them, while insulators do not allow electricity to pass through them. Two examples of conductors are iron and steel. Two examples of insulators are plastic and glass.

Explanation:

When you put conductors in a circuit, it would result in a closed circuit while when you put insulators in a circuit, it would result in an open circuit. This is mainly because electricity can pass through conductors but not insulators. Metals are mostly conductors of electricity while non-metals are mostly not.

conductors allow energy to be passed through and insulators stopped energy being passed
humans are conductors
foil is an insulator

PLEASE HELP ASAP
Avanti works in a bookstore. She has four books and is going to place them in two stacks. The diagram above shows the books before they touch. Use the information in the diagram to answer the question.
How did the temperatures of the four books compare before they touched?

Answers

They were different and they could be the top book was different from the bottom

Which statement best describes the relationship between changes in air pressure and wind speeds?

Options:
A. When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure.

B. When a high- and a low-pressure air mass are far apart, air moves quickly from low to high pressure.

C. When a high- and a low-pressure air mass are close together, air moves slowly from high to low pressure.

D. When a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.

Answers

Answer:

D is the right answer

G
A substance occupies one half of an open container. The atoms of the substance are closely packed but are still
able to slide past each other.
What is most likely the phase of the substance?
gas
liquid
solid and gas
O liquid and solid
Mark this and return
Save and Exit
Next
Submit

Answers

Answer:

Solid and gas

Explanation:

The total answer is solid and gas

Calculate the work done by a 3.4 N force pushing a 400 g sandwich across a table 0.75 m wide in 4 seconds.

Answers

Answer:

2.55 Joules

Explanation:

Force = 3.4 N

Displacement= 0.75 m

3.4 x 0.75 = 2.55

Have a good day/night :)

Will give brainly. Some substances are made of only one kind of atom. Other substances are made of more than one kind of atom. How are the properties of these two types of substances different?

Answers

A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. ... A molecule always contains different kinds of atoms.

Compounds have two or more types of atoms as opposed to elements, which only contain one type of atom. Only chemical changes can separate substances.

What is meant by compound ?

A compound is created when two or more components join chemically in a predetermined mass ratio.

In contrast to elements, which only contain one type of atom, compounds have two or more atom types. Substances can only be separated chemically.

Mixtures are made up of two or more different components. There are two types of mixtures: heterogeneous and homogeneous.

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What kind of rocks would you expect to see on Mars? What evidence supports your response?

Answers

Mars' surface is largely covered with basalt, a volcanic rock covering much of Earth's surface as well. Earth has large amounts of granite in its crust, which Mars appears to lack.

Based on the composition of the martian meteorites and the presence of plains and mountains that look like features produced by basaltic volcanism on Earth, geologists expected to find primarily basalts on Mars.

Which phases does water go through if you use distillation to separate it from dissolved sugar?

Answers

Answer:

a physical change

Explanation:

here's why a chemical change produces new chemical products in order for sugar and water to be a chemical change something new would need to resolve a chemical reaction would have to occur

help pls i will give brainlest

Answers

Answer: its 5ft tall and 12 inches

Explanation:

The answer is 5 foot 12 inches

Using PEP or PrEP can reduce the chances of becoming infected for a person exposed to HIV.
TRUE OR FALSE

Answers

Answer:

trueeee

Explanation:

True i hope this helps

is copper a renewable resource? explain your reasoning

Answers

Yes copper is a renewable resource because it is the of the few materials that can be recycled/ reused.

Yes because cooper can be recycled

WARNING (It's actually 8th grade science but it's not on here...)

The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed below. Which of these elements is in this group?

Characteristics of a group of elements
•It's shiny
•It's a solid at room temperature
• It has atoms with 2 valence electrons

Answer Choices
A. Lithium
B. Strontium
C. Aluminum
D. Silicon

Answers

I think is C,,,,,,,,,,,,,,

A student is asked to explain the osmotic function of the cell membrane using a working model. Which model should the student use?
A. A solid rubber ball placed in a beaker containing a concentrated salt solution.

B. An egg in it's shell placed in a beaker containing a concentrated sugar solution.

C. A solid, impermeable plastic ball containing a sugar solution placed in a beaker containing a more concentrated salt solution.

D. A semi-permeable plastic bag filled with a sugar solution placed in a beaker contain a more concentrated sugar solution

Answers

The answer has to be ,according to my calculations, c

what is the dot and cross diagram for potassium nitrate

Answers

KNO3

The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1.

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Describe the effect of resonance on the amount of rotation that can occur in the main chain of your tripeptide (phenylalanine, alanine, and tyrosine), which affects protein folding. Which sentence best summarizes Annes point of view regarding herself and her diary?A.) Adults would disapprove of the diary and her behavior.B.) Her thoughts arent interesting enough for others to read.C.) Everyone will want to read her diary. were they taking or take the exam Find the x and y-intercepts of y= 2/5x-12 This company has received a special order for 600 computers at $180 per unit. The company will need to pay $2.00 a unit for selling expenses. Fixed costs are unaffected by the special order. How much will overall company net income change if the order is accepted Write your thesis statement about the Effectiveness of Advertising. Topic: technologyQuestions to research: Are advertisements aimed at teenagers effective? And, are they ethical? The mode is ...A) the middle number in a numerical data set when the values have been arranged innumerical order.B) the number or numbers occurring most frequently in a data set.C) a measure of dispersion.D) The difference of the highest value and lowest value in the data set. Simplifyx^2-9/x^2+x-12 Refer to the report for the following items: Early virus clearance and delayed antibody response in case of coronavirus disease 2019 (covid 19) with a history of confection with humanimmunodeficiency virus type 1 and hepatitis C virus.What are the interventions present or used in the study? What does the contest between Athena and Poseidon consist of?Question 3 options:Athena and Poseidon will race to the top of the hillAthena and Poseidon will show off their strength in a tug-of-war matchAthena and Poseidon will offer a gift to the people of the city. Whoever offers the best gift wins.Athena and Poseidon will have a swimming match to the furthest island and back find a polynomial f(x) of degree 3 with real coefficients and the following zeros -1, 3-i The ________ enables multiple client devices to communicate with the server and each other, to share resources, to run applications, and to send messages. Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Write and solve an equation to find the answer. From midnight to 6:00 am, the temperature rose 8C. At 6:00 am, the temperature was 20 C. What was the temperature at midnight? Which relation is not function QuestionWrite an equation of a line that passes through the point (4,3) and is perpendicular to the graph of the equation y=1/3+4 Please look at the attachment and answer correctly, thanks! Question 5 emeka runs a team with members located all across the world. every week he has a 30 minute meeting via a conference call that is required for all teammates. there is frequent absenteeism that is frustrating to him, but he also has difficulty with follow-up on his end due to his workload. this leads to most of his team acting without plans and direction. Ideally, how often should you back up the data on your computer? once an hour, once a day, once a month, once a year. Please hurry!!! I will appreciate if I get help :( The tables given are for the linear functions f(x) and g(x). What is the input value for which f(x) = g(x) is true?