Chemistry Middle School

Which of the following are more reactive than iron?
Check all that apply.
A. Aluminum
B. Potassium
C. "Gold
D. Silver​

Answers

Answer 1

Answer:

The answer is A and B.

Explanation:

Using Reactivity Series .

Which Of The Following Are More Reactive Than Iron?Check All That Apply.A. AluminumB. PotassiumC. "GoldD.

Related Questions

MARK BRAINLIEST AND 50 POINTS

MARK BRAINLIEST AND 50 POINTS

Answers

the shape will effect the way it flies by the size of the body and the wings. you can use creativity and imagination by turning the airplane into an animal that flies, like a macaw, or a bat, and color your airplane to look like said animal. in order for the airplane to be successful and fly across the room, it will have to have a 75 to 25 wing to body ratio, just like a bird or a bat.

Answer:

the shape will effect the way it flies by the size of the body and the wings. you can use creativity and imagination by turning the airplane into an animal that flies, like a macaw, or a bat, and color your airplane to look like said animal. in order for the airplane to be successful and fly across the room, it will have to have a 75 to 25 wing to body ratio, just like a bird or a bat.

Explanation:

Explain why stomach acid must be neutralized after it leaves the stomach.

Answers

Proper digestion in the stomach can only happen within a narrow pH range, and when we neutralize stomach acid, the domino effect is thrown off. Without adequate gastric acid, many vitamins, minerals, proteins, and amino acids cannot be absorbed.
That kay person is right I learned it in class and my teacher even said the same thing.

If a substance has a density of 19 g/cm3, then what is the mass of 8 cm3 of this substance?

Answers

The mass is 2.375 grams
The mass is 3.375 grams

Mudskippers are a species of fish which, over thousands of generations, have developed adaptations that allow them not only to survive outside of the water, but to actually travel from one water source to another. What environmental condition most likely led to these adaptations?


(A)Larger predators

(B)Lower temperatures

(C)Increased precipitation

(D)Frequent droughts

Answers

D I think pls don’t get mad if it’s wrong lol

Part H In parts E, F, and G, which data sets (corrective lenses, glasses, or contacts) show the most similar variation between Doctors?

Answers

Answer: Doctor A Corrective Lenses: 745, 726, 769, 765, 756, 742, 757, 748, 770,

Explanation: I took the test! i have a great day :)

A student measured the pH of five different solutions. Match each pH with the term that best describes each solution.

A student measured the pH of five different solutions. Match each pH with the term that best describes

Answers

Answer:

7ph - Neutral

1ph - weak base

14ph - strong acid

10ph  - strong base

5ph - weak acid

Hope this helps!

Explanation:

1 is the weakest and 14 is the strongest


Neutral-7 weak acid-10. Strong acid-14. Weak base-1. Strong base is 5. Actually not sure but I think.

What is the definition of a chemical change that when two or more substances (molecules) combine to form a new substance (or new molecules).

Answers

Answer:

synthesis reaction

Explanation:

It’s Synthesis reaction

Những oixt nào sau đây Na2O CO2 ZnO N2O5, oxit nào tác dụng đc với
a.H2O b.HNO3 c.KOH

Answers

???????????????????????

Order the following from least to most cellularly complex:
An organ, a cell, a tissue, & a gorilla

(ill give brainlist)

Answers

Answer:

organ, tissue, a cell, and a gorilla (i think)

Explanation:

Gorilla,cell,tissue,organ,amp

Which elements do not normally form compounds?


A. nonmetals

B. alkali metals

C. metalloids

D. noble gases

Answers

I believe the answer is B:noble gases I’m glad to help

Answer:

D. noble gases

Explanation:

l hope it helps

Pls answer this three queshtions. 30 points and will mark as brainlist.
____________________________________________________________________
1.
As an egg developes into a chicken, there are many _________ changes.

(A) chicken

(B) old

(C) chemical
____________________________________________________________________
2.
Chemical reactions are more likely to occur ....

(A) when there is a chemical change

(B) when the situation is correct

(C) when atoms hit each other more often
____________________________________________________________________
3.
Chemical reactions are more likely to occur when...

(A) Group of answer choices

(B) there are more molecules

(C) the temperature increases

(D) the temperature decreases

(E) there is less space

Answers

As an egg develops  into a chicken, there are many (C) chemical changes.

Chemical reactions are more likely to occur (C) when atoms hit each other more often

Chemical reactions are more likely to occur when (B) there are more molecules and (C) the temperature increases

What is chemical reaction?

chemical reaction is a process that leads to the formation of one or more new substances with different chemical and physical properties than the original substances.

During a chemical change, the bonds between atoms are broken and new bonds are formed, resulting in a rearrangement of atoms and a change in the chemical composition of the substance.

Learn about chemical reaction here https://brainly.com/question/11231920

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1. chemical
2. C
3. B, C

what is matter and what are some thing that are living and nonliving

Answers

Answer:

Living beings and non-living things both follows the physical and chemical general principles, like the thermodynamic laws, and they are constituted both by atoms and molecules, the basis of the natural organization of all known matter on Earth.

Answer: Matter is anything that has mass or takes up space, something non living is a rock something living is a tree

Explanation:

what is the relationship between convince and suspect?

Answers

The relationship between "convince" and "suspect" is that they are opposites.
To convince someone means to persuade them to believe or do something. This involves gaining their trust and making them feel confident in your argument or proposal.
On the other hand, to suspect someone means to have doubts or distrust about their motives or actions. This involves questioning their credibility and being cautious about their intentions.
So, while convincing involves building trust and confidence, suspecting involves the opposite - doubting and being cautious.
convince is to make someone believe, or feel sure about something, especially by using logic, argument or evidence while suspect is to imagine or suppose (something) to be true, or to exist, without proof.

30 POINTSSSSSSSSSSSSS how is increasing the amount of sunlight most likely to affect an ecosystem? A. by increasing soil moisture B. by decreasing photosynthesis C. by increasing plant growth D. by decreasing the food supply

Answers

Answer:

here

Explanation:

The increase in sunlight up to a limit might result in an increase in the photosynthesis process as well as in transpiration. More amount of energy will be produced by plants.

C. by increasing plant growth.

SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend, Sandy, told him that he should try using Clean-O detergent, a new brand of laundry soap she found at Sail-Mart. SpongeBob made sure to wash one pair of pants in plain water and another pair in water with the Clean-O detergent. After washing both pairs of pants three times each, the pants washed in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water. 1) What was the problem SpongeBob wanted to investigate? 2) What was the problem SpongeBob wanted to investigate? 3) What is the dependent variable? 4) What should be SpongeBob’s conclusion?

Answers

Answer:

1) SpongeBob investigated whether Clean-O detergent is a good laundry soap. 3) the dependent variable is the color of the pants/how clean the pants were. 4) SpongeBob's conclusion should be that Clean-O detergent is not a good detergent.

Explanation:

You didn't have #2 - it was the same question as #1

Answer:

Hi there!

Explanation:

Questions;

1) He wanted to investigate if clean-o detergent will clean his pants....

2) The independent variable is what the pants were washed in (clean-o detergent)....

3) The dependent variable is, how clean the pants were after washing them...

4) The conclusion should be, the detergent that his friend sandy had told him.. Didn’t work & Clean-o detergent didn’t work any better than plain water.

Hope this helps!

~Have a great day!~

If you have any questions, feel free to ask!

Which of the following are male reproductive organs?

Intestines
Kidneys
Lungs
Testes

Answers

D. Testes

Explain: i took health class

Answer:

D) Testes

Male reproductive organs are:

The male reproductive system includes the penis, scrotum, testes, epididymis, vas deferens, prostate, and seminal vesicles.

Female reproductive organs are:

A female's internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries.

Why does food need to be digested?

Answers

So your body gets the nutrients it needs

Answer:

Food needs to be digested so it can be broken down into sugar molecules and nutrients that can be used by the cell to stay alive.

Explanation:

Please help with questions 11-13! I’ll give brainliest

Please help with questions 11-13! Ill give brainliest

Answers

Answer:
11- 3
12- 4
13- 2
Answer:
11- 3
12- 4
13- 2 hope this helps

Pepsi
Vinegar
Orange Juice


What property do all three of these common household substances have in common?


a

They all have a pH above 7.

b

They all taste bitter.

c

They are all acidic.

d

They all turn litmus paper blue.

Pls Helppp :(

Answers

Answer:

D they are all acidic

Explanation:

This is because they are positively charged by hydroniums

They are all acidic

Magnesium is a shiny, flexible Material that can be burned in the presence of air. When it is burned, it produces a white powder that is is no longer a shiny and flexible material. This white powder also has more mass than the original magnesium.

Choose the one that best gives the best evidence that a chemical reaction occurred, explain.

A - The molecules were separated into individual atoms.
B - The mass of the magnesium changed.
C - Smoke that was trapped between the magnesium atoms was given off.
D - A new substance was formed.

Answers

Answer:

D, a new substance formed

Explanation:

if Magnesium is shiny a flexible but turns to a white powder no longer shiny or flexible when burned, it turns to a new substance

It’s D.

Explanation
Yeah

The diagram below shows changes to the nucleus of an atom.

Which process is occurring in the diagram?

1. Energy is released as a result of atomic fission.

2. Energy is absorbed as a result of atomic fission.

3. Energy is released during the combustion of fossil fuel.

4. Energy is being stored during the formation of fossil fuels.

The diagram below shows changes to the nucleus of an atom.Which process is occurring in the diagram?1.

Answers

1. Energy is released as a result of atomic fission

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option 1 that is energy is released as a result of atomic fission.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. Energy is released as a result of atomic fission.

Therefore, the correct option is option 1 that is energy is released as a result of atomic fission.

To know more about atom, here:

https://brainly.com/question/13518322

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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

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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.

Learn more about rocks and fossils:

brainly.com/question/2168243

Do you think rayon when burnt will stick to the body like other synthetic fibers?

Answers

In other words, since rayon is made from the plant fiber it does not get stick to our body while we burn it
it will not stick to the body most likely

The game of kickball begins with the ball being rolled toward a player. The player then kicks the ball across the field. What is true about the speed of the ball when it is kicked?


A.
The speed of the ball is not dependent on the force used to kick it.

B.
The speed of the ball will be slower than the speed at which it was pitched.

C.
The speed of the ball depends on the force used to kick it.

D.
The speed of the ball mostly depends on the speed at which it was pitched.
which is correct

Answers

Answer:

C. The Speed of the ball depends on the force used to kick it.

Explanation:

Answer:

d is correct

Explanation:

a ball loses some force of the pitch when touching a solid object and so

D.

The speed of the ball mostly depends on the speed at which it was pitched.

which is correct

please help bohr diagram practice

Answers

Answer:

nothing is here

Explanation:

I don't see the picture, if you resend it I may be able to help you.

Which statement refers to convection?


Sunlight travels through space without the aid of fluids or solids.


Land and ocean absorb and re-emit heat from the sun.


Some of this energy is reflected off Earth's atmosphere.


Warm air rises and takes heat with it; eventually it cools and sinks.

Answers

Warm air rises and takes heat with it; eventually cools and sinks

Answer:

Your answer is D

Explanation:

please help with checking over work

please help with checking over work

Answers

Answer: Water Particles!

Explanation: You are correct! Water particles help the sound waves to travel back and forth.

You are correct without a doubt good job man

10g of water will freeze at "32c" what temperature would 20g of water freeze

Answers

Answer:

20g of water would freeze at the Same temperature

all amounts of water will freeze at 32F but 0C

help me with these questions pls thanks :)

help me with these questions pls thanks :)
help me with these questions pls thanks :)
help me with these questions pls thanks :)

Answers

Answer:

1. 2 valence electrons 2. 1 valence electron

Explanation:

valence shell is the elctrons present on the outer most shell

1. 2 valence electrons

2. 1 valence electron

3. 8 valence electrons

Valence electrons are the ones on the very outside ring. Hope this helps!

A student finds that an unknown element readily reacts with alkali metals. What is the best conclusion about the unknown element?

Just checking my answer

Answer options:

It is in group 17

It is an alkaline earth metal

It is a noble gas

It is in group 16

Answers

Answer:

It is a noble gas :D

Explanation:

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