Free Printable Reactions Quizizz

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Worksheets

Reactions Quizizz

Total questions: 80

Worksheet time: 2hrs 1mins

Name

Class

Date

1.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

2.

A substance that increases the rate of a reaction without being used up during the reaction is called a

a)

catalyst

b)

product

c)

reactant

d)

solute

3.

What is the name given to a catalyst in the human body?

a)

Biology

b)

Catalyst

c)

Chemical

d)

Enzyme

4.

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

a)

YES

b)

NO

5.

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

6.

Complete the sentence.

During a chemical reaction, atoms ________.

a)

can appear

b)

can disappear

c)

get rearranged

d)

stop moving and vibrating

7.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

8.

How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl₂ + H₂

a)

1

b)

2

c)

3

d)

4

9.

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

a)

3

b)

6

c)

12

d)

24

10.

How many Aluminum are in Al₂O₃?

a)

3

b)

2

c)

5

11.

How many Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

6

12.

What is the total number of atoms present in 5Na₃PO₄

a)

5

b)

40

c)

55

d)

8

13.

A ___ change causes the substance to change to a new substance with different properties.

a)

Physical

b)

Chemical

14.

A ____ change only changes the look of the substance but NOT the chemical make-up.

a)

Physical

b)

Chemical

15.

Is it a physical or chemical change?

a)

physical

b)

chemical

16.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

17.

Vinegar + baking soda reaction.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

18.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

19.

Rotting banana

Is it a physical or chemical change?

a)

Physical

b)

Chemical

20.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

21.

Water + Kool-aid Powder.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

22.

The metal is rusting.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

23.

Leaves changing colors in the fall.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

24.

Mixing sugar and water.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

25.

Choose all of the following that are PHYSICAL changes.

a)

b)

c)

d)

e)

26.

Choose all of the following that are CHEMICAL changes.

a)

b)

c)

d)

e)

27.

What does the Law of Conservation of Mass say? It says,

"During a chemical reaction, mass is neither _______ or destroyed."

a)

burned

b)

created

c)

melted

28.

So, the Law of Conservation of Mass would tell us that the mass of all the REACTANTS must __________ the mass of all PRODUCTS in a chemical reaction.

a)

equal

b)

be greater than

c)

be less than

29.

An ENDOTHERMIC reaction would feel ______ to the touch, while an EXOTHERMIC reaction would feel ______ to the touch.

a)

hot ; cold

b)

cold ; hot

30.

Element or compound?
H₂O

a)

element

b)

compound

31.

The substances listed on the right side of a chemical equation are the

a)

Yields

b)

Reactants

c)

Products

d)

Precipitates

32.

CaCO₃ represents a chemical

a)

Symbol

b)

Formula

c)

Subscript

d)

Reaction

33.

The substances listed on the left side of a chemical equation are the

a)

Products

b)

Coefficients

c)

Precipitates

d)

Reactants

34.

A molecule is smaller than an atom.

a)

True

b)

False

35.

A molecule is________

a)

a glob of gelatinous goo

b)

smaller than an atom

c)

filled with raisons

d)

more than one atom bonded together

36.

What type of system is shown in the picture?

a)

Open

b)

Close

c)

Isolated

37.

Which of the following is an open system? Check all that apply.

a)

b)

c)

38.

What type of system is shown in the picture?

a)

open

b)

close

c)

isolated

39.

What type of reaction occurs in a hand warmer

a)

exothermic

b)

endothermic

40.

Exothermic reactions...

a)

Absorb energy

b)

Release energy

c)

Release Color

d)

Absorb Color

41.

In an endothermic reaction, heat is ...

a)

taken in or absorbed

b)

given out or released

42.

Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?

a)

It is an exothermic reaction

b)

It is an endothermic reaction

c)

It is made of ice

d)

It is dissolving your mouth

43.

If they energy required to break the bonds is greater than the energy given out by making new bonds the reaction is

a)

Exothermic

b)

Endothermic

c)

Neutralisation

44.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

45.

____ reactions usually feel cold.

a)

endothermic

b)

exothermic

46.

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

a)

Products

b)

Yields

c)

Molecules

d)

Reactants

47.

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

a)

product

b)

yield

c)

chemical symbol

d)

reactants

48.

Which of the following is evidence of a chemical reaction?

a)

fizzing

b)

water changing to ice

c)

saltwater

d)

paper being cut in half

49.

Which of the following models best demonstrates a balanced chemical equation?

a)

F

b)

G

c)

H

d)

J

50.

What are Chemical Reactions?

a)

It's when you mix substances.

b)

a process in which atoms rearrange to form new substances

c)

When something bubbles.

d)

letter and numbers showing the types and number of atoms

51.

Which of the following is NOT evidence that that a chemical reaction has occurred?

a)

produces light/heat

b)

production of a gas

c)

formation of a precipitate

d)

melting

52.

A different chemical substance is formed when _____.

a)

water boils

b)

metal rusts

c)

ice melts

d)

rock is crushed

53.

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

a)

cutting a piece of paper

b)

folding a piece of paper

c)

tearing a piece of paper

d)

burning a piece of paper

54.

What is the conservation of mass?

a)

mass of reactants > mass of products

b)

mass of reactants < mass of products

c)

mass of reactants = mass of products

55.

When you combine vinegar and baking soda, a gas is produced. The gas produced is considered evidence that a chemical reaction occurred.

a)

True

b)

False

56.

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

Example: H₂

a)

Coefficient

b)

Subscript

c)

Atom

d)

Equation

57.

How many different elements are in C₆H₁₂O₆?

a)

1

b)

2

c)

3

d)

4

58.

How many Hydrogen are in 4H₂O?

a)

6

b)

8

c)

2

d)

4

59.

How many atoms of Hydrogen are in this compound

a)

1

b)

2

c)

3

d)

4

60.

How many total atoms are in the compound C₂H₈O ?

a)

11

b)

2

c)

8

d)

1

61.

How many Aluminum are in Al₂O₃?

a)

3

b)

2

c)

5

62.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

63.

Synthetic materials are made by _________.

a)

aliens

b)

humans

c)

farmers

d)

nature

64.

True or False. Natural resources must come from either plants, animals, or the earth.

a)

True

b)

False

65.

What is a synthetic resource?

a)

a resource made by humans from natural materials

b)

naturals resources such as trees and water

66.

Which of the following is an example of a natural material?

a)

plastic

b)

nylon

c)

syngas

d)

cotton

67.

Read the following statements. Select each answer choice that is a true statement about synthetic materials. Please select 4 answers.

a)

Synthetic materials are made from natural resources

b)

Synthetic materials are made by chemically changing natural resouces to create a material with different characteristics.

c)

Some examples of synthetic materials are plastics, medicines, and new fuels.

d)

A synthetic substance cannot be chemically identical to a naturally-occurring substance

e)

Making and using synthetic materials have both positive and negative impacts on society.

68.

What is an example of a natural material?

a)

kevlar

b)

polyester

c)

wood

d)

plastic

69.

What is an example of a synthetic material?

a)

cotton

b)

petroleum oil

c)

leather

d)

nylon

70.

What is an example of a synthetic resource?

a)

plants

b)

potatoes

c)

potato chips

71.

Synthetic materials DO impact society.

a)

True

b)

False

72.

Why are fossil fuels considered nonrenewable resources if they are still forming beneath the surface today?

a)

They are being formed as a type of methane which we cannot use.

b)

They are being formed too far beneath the surface.

c)

The fossil fuels are being broken down by a natural process.

d)

We are depleting the fossil fuels much faster than they can form.

73.

What are renewable resources?

a)

A limited amount and cannot be replaced in a human life time.

b)

Plastic bags

c)

Coal, oil, and natural gas

d)

Can be replaced in our lifetime through natural processes

74.

Which statement is true?

a)

Oil is an example of a renewable resource.

b)

Gold is a renewable resource

c)

Wood is an example of a nonrenewable resource.

d)

Fish are an example of a renewable resource.

75.

True or False: Nonrenewable energy can be replaced in a lifetime.

a)

True

b)

False

76.

Nonrenewable energy takes ________ to be replaced.

a)

days

b)

months

c)

years

d)

millions of years

77.

A resource is considered renewable if it

a)

can be created only over millions of years.

b)

can be replaced in a relatively short amount of time.

c)

is made of Earth's materials like rocks and minerals.

d)

is useful to humans in making energy and materials.

78.

In principle, ______________________ resources will never run out.

a)

renewable

b)

non-renewable

c)

fossil fuel

d)

reprogrammable

79.

What is the best pro about renewable resources?

a)

The are inexpensive

b)

They are always available

c)

They are expensive

d)

They create pollution

80.

Which of the following determines whether a resource is a renewable or nonrenewable resource?

a)

The cost for obtaining and using the resource.

b)

The effect of the resource on the environment

c)

whether the resource is used to generate energy or is made into products

d)

the rate at which the resource can be replaced

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