Chemistry Part 2

Question 1

During a chemical reaction, what happens to the number of atoms?

Answer 1

They remain the same

Question 2

Chemical or Physical Reaction

Baking a cake

Answer 2

chemical

Question 3

Chemical or Physical Reaction

Burning Wood

Answer 3

chemical

Question 4

Chemical or Physical Reaction

Chopping Wood

Answer 4

physical

Question 5

Chemical or Physical Reaction

Mixing baking soda and vinegar

Answer 5

chemical

Question 6

Chemical or Physical Reaction

Making a sand castle

Answer 6

physical

Question 7

What does volume measure?

Answer 7

how much space an object takes up

Question 8

What measuring instrument would you use to measure volume?

Answer 8

a calibrated cup or a gradulated cylinder

Question 9

Is this a testable question

Are plants prettier in sunlight or shade?

Answer 9

no

Question 10

Is this a testable question

Do plants grow better in sunlight or shade?

Answer 10

No

Question 11

Is this a testable question

Do plants grow taller in the sunlight or in the shade?

Answer 11

yes

Question 12

Is this a testable question

Which dogs are friendlier?

Answer 12

no

Question 13

Is this a testable question

Which metal is harder, black mica or pink feldspar?

Answer 13

yes

Question 14

Is this a testable question

How can I make my plant grow taller?

Answer 14

no

Question 15

How is volume measured?

Answer 15

Cubic units by putting the object in water and measuring the increase in water level.

Question 15

How is volume measured?

Answer 15

Cubic units by putting the object in water and measuring the increase in water level.

Question 16

The results of a testing are the independent or dependent variable?

Answer 16

Dependent

Question 17

What the hypothesis is in testing is the independent or dependent variable?

Answer 17

Independent

Question 18

What are controlled variables?

Answer 18

The variables kept the same in an experiment. .

Question 19

What is a solute?

Answer 19

The substance being dissolved.

Question 20

What is a solvent?

Answer 20

The part being used to dissolve a substance.

Question 21

What are the two parts of a solution?

Answer 21

The solute and the solvent

Question 22

Name some substances that are acids?

Answer 22

Vinegar, lemon juice

Question 23

Name substances that are neutral.

Answer 23

Dish washing liquid. Water.

Question 24

Name so substances that are bases.

Answer 24

Windex and Baking Soda

Question 25

What has a pH level under 7?

Answer 25

An acid

Question 26

What has a pH above 7?

Answer 26

A base

Question 27

Substances that are neutral have what pH level?

Answer 27

7

Question 28

What happens when an acid neutralizes a base?

Answer 28

A chemical reaction takes place.

Question 29

What happens to the atoms during a chemical reaction?

Answer 29

They rearrange to produce something new.

Question 30

What is used to find out the pH balance of a substance?

Answer 30

Litmus paper

Question 31

What is sodium acetate?

Answer 31

It’s the salt produced when baking soda and vinegar have a chemical reaction. It is a neutral.

Question 32

What is neutralizing?

Answer 32

It’s when an acid combines with a bases to form a neutral.

Question 33

When happens during oxidation?

Answer 33

The element or molecule loses electrons because of oxygen.

Question 34

What is a mixture?

Answer 34

Two or more elements that are combined.

Question 35

Can mixtures be separated? Why or why not?

Answer 35

They can because they are caused by a physical change, not a chemical change.

Question 36

Is a solution a mixture? Why or why not?

Answer 36

Yes, because it is made up of a solid and a liquid.

Question 37

What is a compound?

Answer 37

They are molecules that have been chemically bonded together to become
a new substance.