CHEMISTRY MIDDLE SCHOOL

Explain why atoms move at different speeds depending on whether they are liquids or solids.

Answers

Answer 1
Answer: The space between the particles allows them to do so. 

Example, a solid's particles are squished together, so it appears as a solid shape. 

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How many hydrogen atoms are in CH2OH?

a-10
b-3
c-5
d-4

Answers

Answer:

B)3

Explanation:

I'm assuming the 2 is meant to be smaller. If it were a regular size 2 the answer would be 2 and that isn't an option
The answer is B. 3 because H2 plus H1 is 3 hydrogen

What is the opposite of ductile and malleable?

PLEASE HELP!!!! I NEED THIS TONIGHT!!!

Answers

ductility = brittleness
malleability = immalleability, rigidity
Opposite of malleable is rigidity and opposite of ductile is brittleness.

What is a compound reaction?

Answers

compound reaction can be defined as the reaction which is done between one or two elements.

a compound reaction is when two or more elements that have been bonded together chemically.

Which of the following most likely happens during a chemical change?No new substances are formed.
Properties of a substance remain unchanged.
Composition of a substance is same as before.
Different atoms than before are introduced after the change.

Answers

The answer is the last option.

The job of the human heart is to circulate blood through all of the body's arteries, capillaries, and veins. The job of the human lungs is to supply the small amount of blood in them with oxygen. The interaction of these two parts of the human body results in a system that A. removes old blood from the body. B. circulates oxygen-filled blood throughout the body. C. turns the protein in blood into food energy for the digestive system. D. breaks down food energy, and turns it into heat.

Answers

To solve this we must be knowing each and every concept related to heart and its function. Therefore, the correct option is option B that is circulates oxygen-filled blood throughout the body.

What is heart?

The heart is an organ that acts as a blood pump. In spiders as well as annelid worms, it is a straight tube. In mollusks, it is a little more complex structure including one or more collecting chambers (atria) and a primary pumping chamber (ventricle).

The myocardial, a thick muscular wall, is made up of numerous layers in the heart. The endocardium lines the interior, while the pericardium, a narrow layer of tissue, covers the exterior. The interaction of these two parts of the human body results in a system that circulates oxygen-filled blood throughout the body.

Therefore, the correct option is option B that is circulates oxygen-filled blood throughout the body.

To know more about heart, here:

brainly.com/question/14393747

#SPJ2
B
All cells new oxygen and blood is a way for them to get it 

What are characteristics of a good scientific investigation

Answers

The characteristics are

Hypothesis and observation


I hope that's help:0
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