What is the primary difference between a hypothesis and a theory?
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Answer: A hypothesis is an explanation for observations. A theory is an explanation for what has been shown many times.
Explanation:
Related Questions
Is this a chemical reaction or not? Explain why you think so (Be sure to answer both parts of the question)
Answers
Answer:
1. No 2. Yes 3. Yes
Explanation:
One is a physically. The other deals with an not reversible change
You are interested in how different air temperatures affect the speed at which gas molecules move. With a classmate, you have planned the following investigation:
Choose a very hot day in the classroom.
The students close all of the windows and doors in the classroom and turn off any fans.
The students measure the temperature in the classroom with a thermometer.
One student stands in the corner of the classroom with a stopwatch.
Another student, 10 meters away in the opposite corner of the room, opens a container filled with a safe, but strong-smelling gas.
The student with the stopwatch measures the amount of time before they can smell the gas.
Repeat the steps above on a very cold day in the classroom.
Identify the independent variable in this investigation from the list below:
A. The temperature of the room
B. Amount of time before they smell the gas
C. The distance between the two students in the room
D. Not enough information is provided to identify the independent variable
E. The type of gas in the container
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Answers
Answer: its 5ft tall and 12 inches
Explanation:
Now, demonstrate a net force of 300 N to the right. How many ways can you do it?
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Answer:
I've chose 5 ways to get there.
Why do Ionic Compounds have to have correct ratios of ions?
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Answer:
.....
Explanation: Because the ionic compound must be electrically neutral
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Calculate the ratio of H+ ions to OH– ions at a pH = 6. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide.
What is the concentration of H+ ions at a pH = 6? mol/L
What is the concentration of OH– ions at a pH = 6? mol/L
What is the ratio of H+ ions to OH– ions at a pH = 6? :1
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Answer:
1:1 ratio
Water (H2O) splits into Hydrogen Ions (H+) and Hydroxyl Ions (OH-). When there are equal parts of Hydrogen Ions (H+) and Hydroxyl Ions (OH-) leading to a 1:1 ratio, pH is neutral (7).Explanation:
The concentration of H + ions at pH 6. The concentration of H + can be deduced by the formula pH = - log H + ==> H + = 10 ^ (- pH) ...
Concentration of -OH at pH 6. The concentration of -OH can be calculated from pOH: pOH = 14 - pH = 14 - 6 = 8. ...
Calculation of the ratio H + / -OH:
am i right about this
Answers
Answer:
I do believe that you are correct, yes
Which of the following does NOT play a role in South Florida’s climate?
A. latitude
B. beach erosion
C. ocean currents
D. global wind patterns
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Answer:
B
Explanation:
Latitude has impact on radiation, ocean currents partially determine temperature, and wind patterns influence temps. Elimination gives B.
I just need help all I need is the answer please some one
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Answer: The correct fill-in-the-blank answers are:
1. through binary fission (already filled in)
2. be resistant to penicillin
3. through asexual reproduction.
4. cell replicates before
5. a simpler process
Explanation:
The correct fill-in-the-blank answers are:
1. Bacteria reproduce through binary fission (already filled in)
2. A parent bacterial cell is able to survive in the presence of antibiotic penicillin. Subsequent generations from this parent will be resistant to penicillin
3. Something that potatoes and bacteria have in common is that they both reproduce through asexual reproduction.
4. In asexual reproduction DNA from the parent cell replicates before it produces daughter cells.
5. Asexual reproduction is a simpler process than sexual reproduction.
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in diagram of the heart, the right side is colored blue to indicate its low in oxygen and high in ____________
Answers
Answer:
CO2 (Carbon dioxide)Explanation:
The right side is collored blue to indicate that the blood pumping through here is low on oxygen, but high in carbon dioxide. Because the blood is so low on oxygen, and high in carbon dioxide (a byproduct of Cellular Respiration), the blood will be pumped to the lungs where the CO2 is removed, and oxygen is taken in.
Normally the pressure on the right side of the heart and in the pulmonary arteries is lower than the pressure on the left side of the heart and in the aorta. This is because: the right side of the heart pumps blue (deoxygenated – little or no oxygen) blood returning from the body back to the lungs.
What is the series of energy transfers shown in the picture below?
A) chemical to mechanical to electrical to thermal
B) mechanical to chemical to thermal to electrical
C) electrical to thermal to mechanical to chemical
D) thermal to mechanical to electrical to chemical
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Answer:
The correct answer is A.
Choose the molecule with the strongest bond. A. CH_{4} B. H_{2}O C. NH_{3} D. HF E. All are equal
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The strength of the bond is based on electronegativity difference between atoms ,larger the difference stronger is the bond.The strongest bond is that of HF.
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms combine as per their electronegativity which gives bond different strengths.The electronegativity is largest between hydrogen and fluorine .Thus, HF has the strongest bond.
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Please help im in a rush and im at therapy so i need to finish this
What is a mixture?
Answers
Answer:
In chemistry, a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.
Explanation:
I hope this helps. ^_^
Mixture
Explanation:
A mixture is created when two or more different substances are physically combined and can be separated back into its original substances.
example- a pile of different kinds of leaves
hope it helps!
?What statement best describes the arrangement of the atoms in an ethylene molecule?
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Two plant reproductive parts are described below.
Part 1: The tip of the female reproductive part that receives pollen from the stamen
Part 2: The male reproductive part that produces pollen
Which statement is true about the parts?
Part 1 is the stamen and Part 2 is the pistil.
Part 1 is the stigma and Part 2 is the ovule.
Part 1 is the ovule and Part 2 is the stigma.
Part 1 is the stigma and Part 2 is the stamen.
Answers
Stamen so the last one is correct
Answer:
Stigma and stamen
Explanation:
Part one stigma and Part two stakes
Hope this helps:) Have a great day.
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Preparing a meal involves both physical and chemical changes. Which involves a chemical change?
toasting bread
boiling water
making ice cubes
slicing a carrot
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Explanation: the others are physical changes
If the gas begins at the conditions described in Trial 1, determine the volume of the gas at STP.
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Project on Gertrude B. Elton
Question + Context: She made medicine drugs like acyclovir and azathioprine (synthetic materials). What natural resources were used to make these?
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Answer:
Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water. Animals, birds, fish and plants are natural resources as well. Natural resources are used to make food, fuel and raw materials for the production of goods.
Answer:
1
Explanation:
Why do physical properties change?
Answers
Answer:
Physical change takes place without any changes in molecular composition.
How is Earth's surface most likely To
change in a place that has extensive tree growth?
A. Top soil will be carried away by wind and water.
B. cracks in rocks will deepen as the roots grow.
C. Big furrows will form due to increase in rainfall.
D. wear away due to abrasion by vegetation.
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Answer:
A. Cracks in rocks will deepen as the roots grow.
The right answer would be Cracks in rocks will deepen as the roots grow.
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 magnification of a light microscope can be found by multiplying the power of the eyepiece by the power of the objective lens. Calculate the magnifications of a microscope that has an 8X eyepiece, and 1OX and 40X objectives.
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For the 10X objective:
Total magnification = Eyepiece magnification x Objective magnification
Total magnification = 8X x 10X
Total magnification = 80X
So the total magnification for the combination of the 8X eyepiece and the 10X objective is 80X.
For the 40X objective:
Total magnification = Eyepiece magnification x Objective magnification
Total magnification = 8X x 40X
Total magnification = 320X
So the total magnification for the combination of the 8X eyepiece and the 40X objective is 320X.
Answer: For 10X objective =80X
For 40X objectives =320 X
Explanation: The magnification of a light microscope can be computed by multiplying the power of the eyepiece by the power of the objective lens.
For the 10X objective = power of eyepiece × power of objective lens= 8X × 10X
= 80X
For the 40X objective = power of eyepiece × power of objective lens= 8X × 40X
= 320X
What is true about matter?
A.
Matter has mass and takes up space.
B.
Matter has mass but does not take up space.
C.
Matter takes up space but does not have mass.
D.
Matter does not have mass or take up space.
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Answer:
A). mateer has mass and takes place
Answer:
Explanation: Its c
.............................
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Select the correct answer from each drop-down menu.
Flow chart, The Rock Cycle. Top, rectangular block Igneous points to blocks A (left), B (right). Block B points to middle block Magma to Igneous block. Words read, increasing pressure and temperature, weathering, deposition, lithification.
In this model of the rock cycle, A represents
rock and arrow B represents the process of
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Answer: A
Explanation:
The spot labelled as'A' in the image will turn into extrusive igneous rocks.
What are igneous rocks?
Igneous rocks are one of the three main rock types the other two including sedimentary and metamorphic rocks.These rocks are formed by cooling and solidification of lava or magma.
The magma is derived from partial melts in the planet's mantle or crust.Melting is caused by increase in temperature or decrease in pressure or even change in composition.Solidification occurs either below surface which is called as intrusive rocks or on the surface as extrusive rocks.
They are classified according to their texture,mode of occurrence,chemical composition,geometry and mineralogy of rock.The two important variables for classification are mineral composition and cooling history.
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What type of tide is Australia likely to be experiencing in the diagram on the RIGHT and why? In your own words explain what is happening?
Answers
Answer:
Spring tides are extremely high and extremely low. This is created when the sun and moon pull together.
Explanation:
From the diagram, the type of tide Australia is likely to be experiencing is: neap tides.
A tide can be defined as the rise and fall of water level in water bodies such as lakes and oceans, especially due to the gravitational force of attraction exerted by the Moon and Sun on planet Earth.
Generally, there are two (2) main types of a tide and these include:
High tide.Low tide.Additionally, the two (2) form of a tide are:
I. Spring tide: it occur s twice each month close to the the full and new
moons, especially when the Moon and Sun pull together.
II. Neap tide: it occurs two times in a month when the Moon is close to its first and last quarters, especially when the Moon and Sun pull at a right angle.
From the diagram, the type of tide Australia is likely to be experiencing is neap tides because it happened when the Moon is close to its first and last quarters and the Moon and Sun were pulling at a right angle.
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What type of person studies and collects data on the weather?
Answers
What does the word centripetal mean
a.
center seeking
b.
continuous
c.
gravitational
d.
free falling
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Please help I will make you the brainliest.
A student in your class made the claim that when animals eat fruits from plants, they harm the plant and threaten its survival. Use evidence and scientific reasoning to refute the claim made by the student.
Answers
Answer:Msg me bruv
Explanation:
When animals eat plants, they indeed cause a shortage of plants, but only for a small period of time.
Because when they excrete, the plant particles help grow into a new plant.
And when they die too, this happens.
And the nitrogen cycle also gets renewed because of this factor.
SO, because of these all reasons, instead of telling the animals are threatening the existence of plants, it will be more reasonable to say that they are helping plants in their growth.
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Answers
Answer:
the answer is C hope I helped
Answer:
c
Explanation: