Quiz about 9 Matter - Chemical Reactions Pretest

Question 1

Is water melting a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 2

Is digesting your food a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 3

Is salt dissolving in water a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 4

Is bending copper wire a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 5

Is a burning candle a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 6

Is melting iron a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 7

Is a car using fuel a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 8

Where is a valence electron found in an atom?

Accepted Answer

The outer shell

Answer

The inner shell

Answer

The middle shell

Question 9

What is the number of valence electrons for Oxygen?

Accepted Answer

6

Answer

8

Answer

2

Answer

1

Question 10

What elements generally make an ionic bond?

Accepted Answer

metal and nonmetal

Answer

2 or more nonmetals

Answer

metal

Answer

none of the above

Question 11

What elements generally make a covalent bond?

Accepted Answer

Two or more non-metals

Answer

A metal and a non-metal

Answer

Two or more metals

Question 12

An ionic bond forms when:

Accepted Answer

valence electrons are transferred between atoms

Answer

valence electrons are shared

Answer

a sea of mobile electrons surround positive ions

Question 13

Predict the bond that will form between C and O.

Accepted Answer

Ionic

Answer

Covalent

Question 14

Predict the bond that will form between Na and Cl.

Accepted Answer

Covalent

Answer

Ionic

Question 15

How many Aluminum atoms are in Al₂O₃?

Accepted Answer

2

Answer

1

Answer

3

Answer

5

Question 16

How many Carbon atoms are in C₆H₁₂O₆?

Accepted Answer

6

Answer

3

Answer

12

Answer

24

Question 17

What is the purpose of photosynthesis?

Accepted Answer

make glucose

Answer

make energy

Answer

make light

Answer

release carbon dioxide

Question 18

In which part of the cell does photosynthesis take place?

Accepted Answer

chloroplast

Answer

mitochondria

Answer

nucleus

Answer

cell membrane

Question 19

What are the reactants of photosynthesis?

Accepted Answer

carbon dioxide and water

Answer

glucose and water

Answer

glucose and oxygen

Answer

oxygen and water

Question 20

What are the products of photosynthesis?

Accepted Answer

glucose and oxygen

Answer

carbon dioxide and water

Answer

oxygen and water

Answer

glucose and water

Question 21

What gas is released by plants during photosynthesis?

Accepted Answer

oxygen

Answer

sulfur

Answer

carbon dioxide

Answer

hydrogen

Question 22

How can photosynthesis be related to cellular respiration?

Accepted Answer

What's produced by one is needed for the other

Answer

They both produce the same products

Answer

They both have the same reactants

Question 23

Which statement about photosynthesis is correct?

Accepted Answer

Plants get the energy they need for photosynthesis from sunlight.

Answer

Plants get the energy they need for photosynthesis from water.

Answer

Plants get the energy they need for photosynthesis from soil.

Question 24

Which of the following is the correct equation for PHOTOSYNTHESIS?

Accepted Answer

carbon dioxide + water --> oxygen+ glucose

Answer

carbon dioxide + glucose + water --> oxygen

Answer

oxygen+ water --> carbon dioxide + glucose

Answer

glucose + oxygen ---> water + carbon dioxide

Question 25

What is the purpose of cellular respiration?

Accepted Answer

To release energy from food

Answer

To break down food

Answer

To create energy in the body

Question 26

Which gas is removed from the atmosphere for respiration?

Accepted Answer

oxygen

Answer

hydrogen

Answer

nitrogen

Answer

carbon dioxide

Question 27

Where does cellular respiration take place in the cell?

Accepted Answer

mitochondria

Answer

cell membrane

Answer

nucleus

Answer

chloroplast

Question 28

What is the correct equation for cellular respiration?

Accepted Answer

oxygen + glucose -> carbon dioxide + water + energy

Answer

oxygen + glucose + energy -> carbon dioxide + water

Answer

carbon dioxide + water --> oxygen+ glucose + energy

Answer

carbon dioxide + water + energy -> oxygen + glucose

Question 29

What chemical reaction has the same products and reactants as cellular respiration but reversed?

Accepted Answer

Photosynthesis

Answer

Rusting

Answer

Combustion

Answer

Symphonies

Question 30

In chemical reactions:

Accepted Answer

the same atoms are present but they rearrange and combine to form new substances (products)

Answer

new types of atoms are formed in the new substances (products)

Answer

the same atoms are present but they mix through each other to form new substances (products)

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