Quiz about Chemical Reaction Unit Review

Question 1

A substance that results from a chemical change

Accepted Answer

Product

Answer

Reactant

Answer

Law of Conservation of Mass

Answer

Chemical reaction

Question 2

Sodium and chlorine react to form sodium chloride. Sodium and chlorine are examples of

Accepted Answer

Reactants

Answer

Products

Answer

Exothermic reactions

Answer

Precipitates

Question 3

A __________ involves a change in state, like melting, freezing, or boiling.

Accepted Answer

Physical change

Answer

Chemical reaction

Answer

Exothermic reaction

Answer

Endothermic reaction

Question 4

The substances at the beginning of a chemical equation are called the ____

Accepted Answer

reactants

Answer

product

Answer

yield

Answer

chemical symbol

Question 5

In the equation, 2Mg + O₂ ---> 2MgO, which are the reactants?

Accepted Answer

Mg and O

Answer

MgO

Answer

Mg and MgO

Answer

O and MgO

Question 6

In a chemical reaction, everything to the right of the arrow is called ______________.

Accepted Answer

Products

Answer

Yields

Answer

Molecules

Answer

Reactants

Question 7

A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?

Accepted Answer

burning a piece of paper

Answer

cutting a piece of paper

Answer

folding a piece of paper

Answer

tearing a piece of paper

Question 8

Digesting your food is an example of

Accepted Answer

chemical change

Answer

physical change

Question 9

How many Sodium (Na) are in 6NaCl?

Accepted Answer

6

Answer

1

Answer

12

Question 10

How many atoms of carbon (C) are in C₆H₁₂O₆?

Accepted Answer

6

Answer

3

Answer

12

Answer

24

Question 11

How many Aluminum are in Al₂O₃?

Accepted Answer

2

Answer

3

Answer

5

Question 12

How many Hydrogen are in 4H₂O?

Accepted Answer

8

Answer

6

Answer

2

Answer

4

Question 13

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

Accepted Answer

Products

Answer

Reactants

Answer

Yields

Answer

Chemical Equation

Question 14

What is the total number of atoms present in 5Na₃PO₄

Accepted Answer

40

Answer

5

Answer

55

Answer

8

Question 15

What is the little number after an element in a chemical equation called.
Example: H₂

Accepted Answer

Subscript

Answer

Coefficient

Answer

Atom

Answer

Equation

Question 16

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

Accepted Answer

Coefficient

Answer

Subscript

Answer

Atom

Answer

Equation

Question 17

Is water melting a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 18

Is a burning candle a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 19

Is a tree sprouting a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 20

Is sour milk a physical or chemical change?

Accepted Answer

Chemical

Answer

Physical

Question 21

Is melting butter a physical or chemical change?

Accepted Answer

Physical

Answer

Chemical

Question 22

The blue numbers in the image below represent ________

Accepted Answer

subscripts

Answer

I don't know, and don't want to try

Answer

coefficients

Answer

none of the answers are correct

Question 23

The red numbers in the image below represent ________

Accepted Answer

coefficients

Answer

subscripts

Answer

I don't know, and don't want to try

Answer

None of the answers are correct

Question 24

How many atoms are there TOTAL in:
H₂SO₄

Accepted Answer

7

Answer

6

Answer

5

Answer

3

Question 25

A molecule is smaller than an atom.

Accepted Answer

False

Answer

True

Question 26

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

Accepted Answer

16

Answer

2

Answer

8

Answer

5

Question 27

How many Hydrogen (H) atoms are in NH₃O5

Accepted Answer

3

Answer

4

Answer

5

Answer

1

Question 28

A molecule is________

Accepted Answer

more than one atom bonded together

Answer

a glob of gelatinous goo

Answer

smaller than an atom

Answer

filled with raisons

Question 29

How many elements are in C₆H₁₂O₆?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 30

What is the chemical symbol for the element hydrogen

Accepted Answer

H

Answer

He

Answer

h

Answer

he

Question 31

What is the chemical symbol for the element Silicon

Accepted Answer

Si

Answer

S

Answer

si

Answer

Sl

Question 32

What is the chemical symbol for the element copper?

Accepted Answer

Cu

Answer

co

Answer

c

Answer

cu

Question 33

What is the chemical symbol for the element Aluminum

Accepted Answer

Al

Answer

A

Answer

AL

Answer

al

Question 34

the basic structural unit of matter

Accepted Answer

atom

Answer

matter

Answer

element

Answer

nucleus

Question 35

the positively charged subatomic particle contained in the nucleus of an atom

Accepted Answer

proton

Answer

neutron

Answer

electron

Answer

matter

Question 36

one or two letters that represent the name of an element

Accepted Answer

element symbol

Answer

element name

Answer

atomic number

Answer

atomic mass

Question 37

What does the 6 represent?

Accepted Answer

atomic number

Answer

atomic mass

Answer

element name

Answer

element symbol

Question 38

What does the C represent?

Accepted Answer

element symbol

Answer

atomic mass

Answer

atomic number

Answer

element name

Question 39

These are found on the Periodic Table.

Accepted Answer

Elements

Answer

Compounds

Answer

Mixtures

Question 40

What is the name of this element?

Accepted Answer

Mercury

Answer

Helium

Answer

Rubidium

Answer

Hydrogen

Question 41

What element is this?

Accepted Answer

Silicon

Answer

Silver

Answer

Sulfur

Answer

Selenium

Question 42

All matter is made of .....

Accepted Answer

atoms

Answer

energy

Answer

air

Answer

chemistry

Question 43

An element is made up of only one kind of _____.

Accepted Answer

atom

Answer

isotope

Answer

plastic

Answer

metal

Question 44

Which is an electron?

Accepted Answer

A

Answer

B

Answer

C

Question 45

Which is a proton?

Accepted Answer

C

Answer

A

Answer

B

Question 46

Which is a neutron?

Accepted Answer

B

Answer

A

Answer

C

Question 47

Which of the following is not a compound?

Accepted Answer

Cl

Answer

HCl

Answer

NaCl

Answer

CO2

Question 48

Is water an element or a compound?

Accepted Answer

Compound

Answer

Element

Question 49

A compound consists of two or more different elements bound together.

Accepted Answer

True

Answer

False

Question 50

Is Iron (Fe) an element or a compound?

Accepted Answer

Element

Answer

Compound

Question 51

Which of the following organelles is responsible for photosynthesis?

Accepted Answer

Chloroplast

Answer

Mitochondria

Answer

Nucleus

Answer

Vacuole

Question 52

What molecule does photosynthesis create?

Accepted Answer

Glucose

Answer

CO2

Answer

Chloroplast

Answer

Energy

Question 53

Which of the chemical equations below best matches the model being displayed in the graphic above?

Accepted Answer

6CO₂ + 6H₂O + Light Energy --> C₆H₁₂O₆ + 6O₂

Answer

C₆H₁₂O₆ + 6O₂ --> 6CO₂ + 6H₂O + Light Energy

Answer

6CO₂ + C₆H₁₂O₆--> 6O₂+ 6H₂O + Light Energy

Answer

C₆H₁₂O₆ + O₂ --> C₆H₁₂O₆ + O₂

Question 54

The main source of energy for all life comes from ____.

Accepted Answer

the sun

Answer

the Earth

Answer

the moon

Answer

the food we eat/make

Question 55

The reactants of photosynthesis are

Accepted Answer

carbon dioxide and water.

Answer

sugar and water.

Answer

sugar and oxygen.

Answer

carbon dioxide and oxygen.

Question 56

What are the products of photosynthesis?

Accepted Answer

Glucose and oxygen

Answer

Carbon dioxide and water

Answer

Carbon dioxide and oxygen

Answer

Glucose and water

Question 57

What pigment absorbs sunlight for photosynthesis?

Accepted Answer

chlorophyll

Answer

chloroplast

Answer

thylakoid

Answer

grana

Question 58

What is the purpose of photosynthesis?

Accepted Answer

make glucose

Answer

make ATP

Answer

make light

Answer

release carbon dioxide

Question 59

What is the gas we breathe out that plants use for photosynthesis?

Accepted Answer

carbon dioxide

Answer

sulfur

Answer

oxygen

Answer

hydrogen

Question 60

What are the reactants in the equation for cellular respiration?

Accepted Answer

glucose and oxygen

Answer

oxygen and lactic acid

Answer

carbon dioxide and water

Answer

water and glucose

Question 61

What is the correct equation for cellular respiration?

Accepted Answer

6O₂ + C₆H₁₂O₆ -> 6CO₂ + 6H₂O + Energy

Answer

6O₂ + C₆H₁₂O₆ + Energy -> 6CO₂ + 6H₂O

Answer

6CO₂ + 6H₂O -> 6O₂ + C₆H₁₂O₆ + Energy

Answer

6CO₂+ 6H₂O + Energy -> 6O₂ + C₆H₁₂O₆

Question 62

Where does cellular respiration occur?

Accepted Answer

Mitochondria

Answer

Chloroplast

Answer

Nucleus

Answer

Vacuole

Question 63

What does the chemical formula C₆H₁₂O₆ represent?

Accepted Answer

Glucose

Answer

Oxygen

Answer

Carbon dioxide

Answer

Hydroxide

Question 64

In Cellular Respiration, cells use energy available in food to create what energy-rich compound?

Accepted Answer

ATP

Answer

ADP

Answer

glucose

Answer

water

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