Quiz about Chemical Reactions Review

Question 1

Which is the name of the kind of solid substance formed in this figure?

Accepted Answer

precipitate

Answer

aqueous

Answer

acid

Answer

synthesis

Question 2

the starting materials in a chemical reaction

Accepted Answer

Reactants

Answer

Products

Answer

Starters

Answer

Enders

Question 3

a substance that is formed as the result of a chemical reaction

Accepted Answer

Product

Answer

Reactant

Answer

Starters

Answer

Enders

Question 4

What are the products of the chemical reaction pictured?

Accepted Answer

CO₂ and H₂O

Answer

CH₄ and CO₂

Answer

CH₄ and O₂

Answer

O₂ and H₂O

Question 5

How many reactants are in A + B ---> C ?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 6

How many products are in A + B ---> 2C

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 7

This is used to represent the number of each atom being represented.

Accepted Answer

The Subscript

Answer

A Exponent

Answer

The Coefficient

Answer

A Molecule

Question 8

This appears on the left side of a chemical formula, and represents how many molecules there are.

Accepted Answer

The Coefficient

Answer

An Atom

Answer

The Subscript

Answer

A Molecule

Question 9

How many Hydrogen (H) atoms are in NH₃O5

Accepted Answer

3

Answer

4

Answer

5

Answer

1

Question 10

How many Oxygen (O) atoms are in one molecule of 2C₂HO₈C_l2

Accepted Answer

8

Answer

2

Answer

16

Answer

5

Question 11

How many elements are in C₆H₁₂O₆?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 12

How many molecules of KNO₃ are shown?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 13

A property is:

Accepted Answer

a unique characteristic that helps identify a substance and distinguish one substance from another

Answer

made of only one type of material (atoms or molecules) all the way through

Answer

made of more than one substance (or more than one type of atom or molecule)

Question 14

Which is an example of a substance?

Accepted Answer

Chalk

Answer

A bag of Skittles

Answer

Chocolate milk

Answer

Air

Question 15

How many Al atoms are in this molecule? 4Al₂O₃

Accepted Answer

2

Answer

8

Answer

6

Answer

4

Question 16

A chemical reaction is ___________________.

Accepted Answer

when substances undergo changes that result in a new substance

Answer

a characteristic of a substance that can be observed without changing the substance into another substance

Answer

when substances undergo changes that alter their form or physical appearance

Question 17

Select the pair of words that correctly displays the general FORMAT for writing CHEMICAL EQUATIONS.

Accepted Answer

reactants  -->  products

Answer

products  -->  reactants

Answer

products  -->  products

Answer

reactants  -->  reactants

Question 18

Which of the following is evidence that a chemical reaction took place

Accepted Answer

formation of gas bubbles

Answer

change in state

Answer

something was cut in half

Answer

a mixture is formed

Question 19

A scientist performed four investigations using eight different liquids. In each investigation, the scientist combined two of the liquids under a fume hood and recorded observations in the table below.In which investigation is it least likely that the liquids reacted chemically?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 20

Which of the following is evidence of a chemical reaction?

Accepted Answer

fizzing

Answer

water changing to ice

Answer

saltwater

Answer

paper being cut in half

Question 21

How many molecules are in this chemical formula?

Accepted Answer

2 Molecules

Answer

4 Molecules

Answer

6 Molecules

Answer

5 Molecules

Question 22

How many oxygen atoms are in this chemical formula?

Accepted Answer

4 oxygen atoms

Answer

7 oxygen atoms

Answer

3 oxygen atoms

Answer

1 oxygen atoms

Question 23

How many molecules are in this chemical formula?

Accepted Answer

2 molecules

Answer

5 molecules

Answer

4 molecules

Answer

6 molecules

Question 24

How many hydrogen atoms are in this chemical formula:

Accepted Answer

4 hydrogen atoms

Answer

1 hydrogen atom

Answer

2 hydrogen atoms

Answer

3 hydrogen atoms

Question 25

Which is the best example of a new substance forming?

Accepted Answer

lighting a match

Answer

cutting a piece of paper

Answer

popping a balloon

Answer

hitting a nail with a hammer

Question 26

Which is an example of a different substance being formed?

Accepted Answer

wood burning

Answer

glass breaking

Answer

metal melting

Answer

water freezing

Question 27

Boiling Water

Accepted Answer

Physical Change

Answer

Chemical Change

Question 28

Dissolving Sugar

Accepted Answer

Physical Change

Answer

Chemical Change

Question 29

Bending metal

Accepted Answer

Physical Change

Answer

Chemical Change

Question 30

A Candle Burning

Accepted Answer

Chemical Change

Answer

Physical Change

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science