Quiz about Chemical Reactions

Question 1

A substance that has a pH of 0-6.9, sour taste

Accepted Answer

acid

Answer

base

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 2

A change in state of matter where no new substance is formed.

Accepted Answer

physical change

Answer

acid

Answer

base

Answer

neutral

Answer

chemical reaction (change)

Question 3

Chemicals combine to cause new substances to be formed.

Accepted Answer

chemical reaction (change)

Answer

acid

Answer

base

Answer

neutral

Answer

physical change

Question 4

A substance that has a pH of 7, pure water is an example

Accepted Answer

neutral

Answer

acid

Answer

base

Answer

chemical reaction (change)

Answer

physical change

Question 5

A substance that has a pH of 7.1-14, bitter taste and feel slippery

Accepted Answer

base

Answer

acid

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 6

Examples include - battery acid, stomach acid, vinegar, coffee, milk, and vomit

Accepted Answer

acid

Answer

base

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 7

Examples include - lemon, orange juice, soda pop, chicken soup, and tomato

Accepted Answer

acid

Answer

base

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 8

Examples include - ammonia, bleach, drain cleaner, baking soda, hand soap, and stomach tablets

Accepted Answer

base

Answer

acid

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 9

Examples include -blood, spit, sea water

Accepted Answer

base

Answer

acid

Answer

neutral

Answer

chemical reaction (change)

Answer

physical change

Question 10

Examples include - battery touches steel wool, color change, light or glow produced, photosynthesis, rusting, cooking or baking

Accepted Answer

chemical reaction (change)

Answer

physical change

Question 11

Examples include - bubbles (new gas produced), glow stick bent mixing luminol and hydrogen peroxide, and no longer conducts electricity

Accepted Answer

chemical reaction (change)

Answer

physical change

Question 12

Examples include - hydrogen peroxide breaks down into water and oxygen, rocket fuel burns, rotting, digestion

Accepted Answer

chemical reaction (change)

Answer

physical change

Question 13

New substance formed with different properties. Properties of the product are different from the properties of the reactants.

Accepted Answer

chemical reaction (change)

Answer

physical change

Question 14

Examples include - glass broken, paper torn, chopping, sugar dissolves in water

Accepted Answer

physical change

Answer

chemical reaction (change)

Question 15

Examples include - change of state (solid to liquid -- liquid to gas)

Accepted Answer

physical change

Answer

chemical reaction (change)

Question 16

No new substance formed

Accepted Answer

physical change

Answer

chemical reaction (change)

Question 17

A chemical that makes a chemical reaction happen faster.

Does not become part of the new substance made during the chemical reaction

Accepted Answer

catalyst

Answer

reactants

Answer

products

Answer

law of conservation of mass

Question 18

Always found to the left of the arrow in a chemical reaction - substances combined

Accepted Answer

reactants

Answer

catalyst

Answer

products

Answer

law of conservation of mass

Question 19

Substances that are combined to form products in a chemical reaction.

Accepted Answer

reactants

Answer

catalyst

Answer

products

Answer

law of conservation of mass

Question 20

Always found to the right of the arrow in a chemical reaction - the substance formed

Accepted Answer

products

Answer

catalyst

Answer

reactants

Answer

law of conservation of mass

Question 21

The result of substances being combined in a chemical reaction.

Accepted Answer

products

Answer

catalyst

Answer

reactants

Answer

law of conservation of mass

Question 22

Identify the underlined portion --

The engines of the space shuttle use liquid hydrogen as fuel. Liquid hydrogen combines with liquid oxygen which creates an enormous amount of energy and water vapor

Accepted Answer

reactants

Answer

catalyst

Answer

products

Answer

law of conservation of mass

Question 23

Identify the underlined portion --

The engines of the space shuttle use liquid hydrogen as fuel. Liquid hydrogen combines with liquid oxygen which creates an enormous amount of energy and water vapor

Accepted Answer

products

Answer

catalyst

Answer

reactants

Answer

law of conservation of mass

Question 24

Identify the underlined portion --

When lightning strikes, air (nitrogen gas and oxygen gas) around it becomes extremely hot which forms nitric oxide.

Accepted Answer

reactants

Answer

catalyst

Answer

products

Answer

law of conservation of mass

Question 25

Identify the underlined portion --

When lightning strikes, air (nitrogen gas and oxygen gas) around it becomes extremely hot which forms nitric oxide.

Accepted Answer

products

Answer

catalyst

Answer

reactants

Answer

law of conservation of mass

Question 26

Matter is not created or destroyed

Accepted Answer

law of conservation of mass

Answer

catalyst

Answer

reactants

Answer

products

Question 27

The total number of atoms before and after the chemical reaction stays the same

Accepted Answer

law of conservation of mass

Answer

catalyst

Answer

reactants

Answer

products

Question 28

1- Identify as an element or compound

CH₂Cl₂

2- Total number of atoms

Accepted Answer

compound

Accepted Answer

5

Answer

element

Answer

4

Answer

3

Question 29

1- Identify as an element or compound

S

2- Total number of atoms

Accepted Answer

element

Accepted Answer

8

Answer

compound

Answer

3

Answer

11

Question 30

Identify as an element or compound

C

Accepted Answer

element

Answer

compound

Question 31

Identify as an element or compound

Accepted Answer

compound

Answer

element

Question 32

Identify as an element or compound

Accepted Answer

element

Answer

compound

Question 33

Identify as an element or compound

Accepted Answer

compound

Answer

element

Question 34

Chemical A has a mass of 11 grams and Chemical B has

a mass of 26 grams. If the two chemicals are mixed and a

complete chemical reaction occurs - the total mass of the reactants is 37 grams

This is an example of _____

Accepted Answer

law of conservation of mass

Answer

reactants

Answer

products

Answer

catalyst

Question 35

500 g of liquid water is frozen in an ice cube tray resulting in
500 g of ice.

This is an example of _____

Accepted Answer

law of conservation of mass

Answer

reactants

Answer

products

Answer

catalyst

Question 36

A pot of water containing 1 liter of water is boiled until all the water is gone. What is the best explanation as to what happened?

Accepted Answer

the water changed into a gas called water vapor and went into the air (matter was not created and not destroyed)

Answer

all the water was destroyed

Answer

new water was created

Answer

the water froze into ice

Question 37

A student notices that an inflated balloon gets larger

when it is warmed by a lamp. Which best describes the

mass of the balloon as a result of this change?

Accepted Answer

the mass of the balloon stays the same - only the molecules have spread out

Answer

the mass increases

Answer

the mass decreases

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