Free Printable TBF Quiz #2

1.

What is this?

a)

Compound

b)

Element

c)

Mixture of elements

d)

Mixture of compounds

2.

What is this?

a)

Compound

b)

Element

c)

Mixture of elements

d)

Mixture of compounds

3.

What is this?

a)

Element

b)

Compound

c)

Mixture

d)

Molecule

4.

What are these?

a)

Molecules Made of Single Elements

b)

Compounds

5.

What are these?

a)

Compounds

b)

Elements

6.

What is the tiniest particle in the entire universe?

a)

cells

b)

gases

c)

atoms

d)

liquids

7.

What is the picture displayed?

a)

atom

b)

molecule that is an element

c)

cells

d)

compound

8.

What is the picture displayed?

a)

atom

b)

element

c)

molecule that is a compound

d)

cells

9.

Classify the picture with the correct label.

a)

Element

b)

Compound

c)

Mixture of Elements

10.

Examine the picture.

a)

The picture shows a compound only

b)

The picture shows a compound and an element

c)

The picture shows an element only

11.

A substance with two or more different types of atoms bonded together is called...

a)

An element

b)

An atom

c)

A compound

12.

H₂O₂← ?
This number tells the number of atoms present.

a)

coefficient

b)

molecule

c)

subscript

d)

atom

13.

→2H₂O
This number tells how many molecules are in a chemical equation.

a)

coefficient

b)

subscript

c)

compound

d)

element

14.

2H₂O
How many Hydrogen atoms are present?

a)

2

b)

4

c)

1

d)

10

15.

2H₂O
How many Oxygen atoms are present?

a)

2

b)

4

c)

1

d)

5

16.

2H₂O
How many H₂O molecules are present?

a)

1

b)

4

c)

2

d)

8

17.

5C₂H₅Cl

How many C₂H₅Cl molecules are present?

a)

1

b)

2

c)

5

d)

55

18.

5C₂H₅Cl

What is the coefficient in the formula above?

a)

1

b)

2

c)

5

d)

55

19.

5C₂H₅Cl

What is the subscript for Hydrogen in the formula above?

a)

1

b)

2

c)

5

d)

55

20.

5C₂H₅Cl

What is the subscript for Carbon in the formula above?

a)

1

b)

2

c)

5

d)

55

21.

5C₂H₅Cl

How many total atoms are in the formula above?

a)

10

b)

25

c)

5

d)

40

22.

What are the basic building blocks for all matter?

a)

atoms

b)

elements

c)

compounds

d)

chemicals

23.

What do we call a substance consisting of a single atom?

a)

coefficient

b)

element

c)

compound

d)

molecule

24.

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

a)

formula

b)

atom

c)

subscript

d)

compound

25.

All ____________ are made up of two or more atoms bonded together.

a)

atoms

b)

molecules

c)

electrons

d)

elements

26.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

27.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

28.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

29.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

30.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

31.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

32.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

33.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

34.

What type of substance is this?

a)

Single Atom

b)

Diatomic Molecule

c)

Discrete/Single Molecule

d)

Crystal Molecule

e)

Polymer Molecule

35.

Which statement is TRUE?

a)

A and B are both crystals.

b)

A is a crystal and B is not.

c)

B is a crystal and A is not.

d)

Neither is a crystal.

36.

glass breaking

a)

physical change

b)

chemical change

37.

a rusting bicycle

a)

physical change

b)

chemical change

38.

mowing the lawn

a)

physical change

b)

chemical change

39.

frying an egg

a)

physical change

b)

chemical change

40.

freezing chocolate covered bananas

a)

physical change

b)

chemical change

41.

corroding metal

a)

physical change

b)

chemical change

42.

melting ice cream

a)

physical change

b)

chemical change

43.

Exploding fireworks is a

a)

Physical Change

b)

Chemical Change

c)

Katy Perry Song

44.

Rotting bananas show a

a)

Chemical Change

b)

Physical Change

45.

What happens when a piece of wood burns?

a)

A physical change takes place.

b)

A chemical change takes place.

c)

The wood loses its gravity.

d)

The wood becomes a tree again.

46.

Which answer below makes a correct statement?

a)

Physical change only changes the color.

b)

Physical change only changes the size.

c)

Physical change changes the matter into something totally different.

d)

Physical change begins and ends with the same matter.

47.

A change that does not result in a new substance.

a)

Chemical Change

b)

Physical Change

48.

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

a)

Cutting a piece of paper with scissors.

b)

Folding a piece of paper into an airplane.

c)

Ripping a piece of paper with their hands.

d)

Burning a piece of paper with a match.

49.

Water freezing into ice is an example of a

a)

Chemical Change

b)

Physical Change

50.

Which of the following is a chemical reaction?

a)

Sodium and chlorine atoms bond to form salt molecules.

b)

Ice melts to form water.

c)

Carbon dioxide freezes to form dry ice.

d)

Salt and water mix to form salt water.

51.

Which of the following represent chemical equations? Check all that apply.

a)

$2Na\ +\ H_2O\ \rightarrow\ 2NaOH\ +\ H_2$

b)

$2KClO_3\ \ \rightarrow\ 2KCl\ +\ 3O_2$

c)

$2Fe\ +\ 3O_{2\ }\rightarrow\ 2Fe_2O_3$

d)

$2H_2O$

e)

$3O_3\ ,\ H_2O$

52.

$C_2H_6\ +\ 5O_2\ \rightarrow\ 2CO_2\ +\ 3H_2O_2$
Given this chemical equation, what are the REACTANTS?

a)

$C_2H_{6\ }and\ 5O_2$

b)

$2CO_2\ and\ 3H_2O_2$

53.

$C_2H_6\ +\ 5O_2\ \rightarrow\ 2CO_2\ +\ 3H_2O_2$
Given this chemical equation, what are the PRODUCTS?

a)

$C_2H_{6\ }and\ 5O_2$

b)

$2CO_2\ and\ 3H_2O_2$

54.

The formula shown here represents the breakdown of a metal into rust. What elements are involved in this reaction? Check all that apply. $4Fe\ +\ 3O_2\ \rightarrow\ 2Fe_2O_3$

a)

Iron

b)

Oxygen

c)

Carbon

d)

Nitrogen

55.

Review the image and then pick the scenario below which best illustrates the Law of Conservation of Mass.

a)

A scientist adds 5g of Substance A to 5g of Substance B. A reaction occurs that produces 10g of Substance C.

b)

A scientist adds 5g of Substance A to 5g of Substance B. A reaction occurs that produces 15g of Substance C.

56.

Which image below best demonstrates the Law of Conservation of Mass?

a)

b)

57.

In the equation shown, what are the reactant(s)?

a)

N₂+ H₂

b)

NH₃

58.

In the equation shown, what are the product(s)?

a)

N₂+ H₂

b)

NH₃

59.

Is this equation balanced?

a)

Yes

b)

No

60.

Is this equation balanced?

a)

Yes

b)

No

61.

Is this equation balanced?

a)

Yes

b)

No

62.

To balance an equation you should:

a)

ONLY change subscripts.

b)

ONLY change coefficients.

c)

Change BOTH subscripts and coefficients.

63.

Balance this equation:

H₂ + Cl₂ ---> HCl

a)

It is balanced.

b)

H₂ + Cl₂ ---> 2HCl

c)

3H₂ + Cl₂ ---> 6HCl

d)

H₂ + 3Cl₂ ---> 6HCl

64.

Balance this equation:

HgO ---> 2Hg + O₂

a)

It is balanced.

b)

2HgO ---> 2Hg + O₂

c)

2HgO ---> Hg + O₂

d)

HgO ---> Hg + 2O₂

65.

Which of the letters (A-D) represents activation energy?

a)

A

b)

B

c)

C

d)

D

66.

What type of reaction occurs in a hand warmer

a)

exothermic

b)

endothermic

67.

_____ reactions usually feel hot!

a)

endothermic

b)

exothermic

68.

____ reactions usually feel cold.

a)

endothermic

b)

exothermic

69.

The graph above is from which type of reaction?

a)

Endothermic reaction

b)

Exothermic Reaction

70.

The graph above is from which type of reaction?

a)

Endothermic reaction

b)

Exothermic reaction

71.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

72.

When calcium reacts with water, the temperature changes from 18°C to 39°C. Which statement is correct?

a)

The solution at the end is acidic

b)

The reaction is reversible

c)

The reaction is exothermic

d)

The reaction is endothermic

73.

What is the Heat of Reaction $\Delta H$ for this reaction?

a)

-200 KJ

b)

200 KJ

c)

400 KJ

d)

-300 KJ

74.

How much activation energy is needed for this reaction?

a)

300 KJ

b)

500 KJ

c)

400 KJ

d)

100 KJ

75.

Are the products or reactants of this reaction storing more energy in their chemical bonds?

a)

Both storing the same

b)

No way to tell

c)

Products

d)

Reactants

76.

What type of chemical reaction absorbs energy and requires energy for the reaction to occur?

a)

Endothermic

b)

Exotermic

c)

Exothermic

d)

Endotermic

TBF Quiz #2 - Topics 5 & 6

Total questions: 76

Worksheet time: 1hrs 16mins

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