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Phys. Props, Chem Rxns, Compounds/Molec, Mixtures

Total questions: 116

Worksheet time: 2hrs 34mins

Name
Class
Date
1.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
2.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
3.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
4.

H₂O is a compound molecule.

a)

TRUE

b)

FALSE

5.

O2 is a compound molecule.

a)

TRUE

b)

FALSE

6.

Group of atoms bonded together

a)

Mixture

b)

Compouns

c)

Atom

d)

Molecules

7.

What is the picture displayed?

a)

atom

b)

element molecule

c)

compound molecule

8.
How many Hydrogen atoms are in Water (H2O)
a)
1
b)
2
c)
3
d)
4
9.

Are these molecules also compounds?

a)

YES

b)

NO

10.

Which of the following is NOT a compound?

a)

HCl

b)

Cl2

c)

NaCl

d)

CO2

11.

Which of the following represents an element molecule?

a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
12.
Name this compound: H2O
a)
Water
b)
Carbon dioxide
c)
Hydrogen peroxide 
d)
Sulfuric acid
13.
Which of the following chemical formulas represents a compound? 
a)
C3
b)
O2
c)
CH3CHO
d)
H2
14.
Which statement best describes an element?
a)
made from mixture 
b)
thousands in the world
c)
pure, made of only one atom
d)
can be separated 
15.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
16.
What is the tiniest particle in the entire universe?
a)
cells
b)
gases
c)
atoms
d)
liquids
17.
What is the name of a single type of atom?
a)
cell
b)
proton
c)
element
d)
atom
18.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
19.
Are these molecules also compounds?
a)
YES
b)
NO
20.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
21.
Which of the following is NOT an example of chemical change?
a)
sour milk
b)
burning wood
c)
breaking a pencil
d)
rust
22.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
23.
Ripping up paper ...
a)
Chemical Change
b)
Physical Change
24.
An explosion occurs ...
a)
Chemical Change
b)
Physical Change
25.

Which is the property of matter in which a substance can transfer heat or electricity?

a)

magnetism

b)

conductivity

c)

density

d)

solubility

26.

What happens when a substance undergoes a physical change?

a)

Some physical properties change, but the substance keeps its identity.

b)

No physical properties change, and the substance keeps its identity.

c)

Some physical properties change, and the substance changes its identity.

d)

No physical properties change, but the substance changes its identity.

27.

What is an example of a physical change?

a)

having less ash than the paper that was burned to form it

b)

ice forming and then melting back into water

c)

rust having a different identity than the iron it forms on

d)

the irreversible reaction of vinegar and baking soda

28.

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

a)

The change is a physical change because the copper in the statue is still there.

b)

The change is a physical change because a new chemical is formed on the outside of the statue.

c)

The change is not a physical change because the color of the statue has changed.

d)

The change is not a physical change because a new chemical is formed on the outside of the statue.

29.
True or False: a physical change may produce a new substance.
a)
True
b)
False
30.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
31.
Is glass breaking a chemical or phyiscal change?
a)
chemical
b)
physical
32.

Which of the following options provides evidence of a CHEMICAL change?

a)

Wood is burned releasing ash and smoke

b)

Rocks separate when soil is sifted

c)

Water turns to ice when you put it in the freezer

d)

Salt dissolves in water

33.

 

Which is an example of a physical

change?

a)

a candle burning

b)

baking a cake

c)

evaporating water

d)

metal rusting

34.

Mowing the lawn is an example of

a)

Chemical Change

b)

Physical Change

c)

No Change

35.

Which example provides evidence of a chemical change?

a)

Wood releases ash and smoke when burned.

b)

Rock particles separate when soil is being sifted.

c)

Boiling water bubbles when being heated.

d)

Sugar is not visible when dissolved in water.

36.

When vinegar and baking soda are combined, bubbles and foam are produced.

What evidence demonstrates that a chemical change has occurred?

a)

A color change occurs.

b)

A gas is formed.

c)

A solid is dissolved.

d)

A precipitate is formed.

37.

Which processes from the table can be used as evidence to identify the formation of a new substance?

a)

Processes A, B, C, and D

b)

Processes B, C, E, and F

c)

Processes B, C, D, and F

d)

Processes C, D, E, and F

38.

Students performed investigations using water and three chemicals, baking soda, calcium chloride, and phenol red solution.  The student observations are shown in the table.

Which investigations above provide supporting evidence that a new substance formed?

a)

Investigations 1, 2, and 3

b)

Investigations 1, 3, and 5

c)

Investigations 2, 3, and 4

d)

Investigations 3, 4, and 5

39.

After an investigation, students were disposing of left over substances.  One student poured all of the liquids down the sink drain.  A few seconds later, a white cloud formed above the sink and the student’s eyes began to burn.

Which statement accurately describes what caused this occurrence?

a)

The student did not wait two minutes in between pouring each liquid down the drain.

b)

The student did not allow water to run in the sink after pouring each liquid down the drain.

c)

A physical change occurred resulting in the formation of a new substance.

d)

A chemical change occurred resulting in the formation of a new substance.

40.

Students performed multiple investigations at different stations in the classroom.  The data collected is listed in the table.

The observations from which investigations provide evidence that a new substance was formed?

a)

Stations 1, 3, 4, and 5

b)

Stations 2, 5, and 6

c)

Stations 1, 3, and 4

d)

Stations 1, 2, 3, and 4

41.

Table salt is a compound made from two elements, sodium and chlorine.

Which statement best explains why the characteristics of table salt are so different from the characteristics of sodium and chlorine?

a)

Salt is processed by the evaporation of seawater or mineral-rich spring water

b)

Salt is processed from salt mines because pure sodium does not occur in na

c)

When sodium and chlorine combine, a physical change occurs and a new substance is formed.

d)

When sodium and chlorine combine, a chemical change occurs and a new substance is formed.

42.

Students performed an investigation to see what would happen when sugar is exposed to heat. The students' observations are listed in the table.

Which students’ observations indicate that a new substance formed as a chemical change occurred?

a)

Student A and Student C

b)

Student B and Student C

c)

Student A and Student D

d)

Student B and Student D

43.

Flour, sugar, cocoa, oil, and eggs are mixed together and placed in the oven to make brownies.  When the brownies are removed from the oven, they no longer look like the original ingredients. 

Which of the following describes why the ingredients changed?

a)

A biological change occurred.

b)

No change occurred.

c)

A physical change occurred.

d)

A chemical change occurred.

44.

Two liquids are mixed together.  Which of the following does NOT identify the formation of a new substance?

a)

A gas is produced.

b)

One liquid dissolves into the other.

c)

The temperature changes.

d)

A solid is formed.

45.

Which column in the table includes only chemical changes?

a)

A

b)

B

c)

C

d)

D

46.

During a science class investigation, a teacher places a small amount of sugar in a beaker and heats it over a candle.  Which of the following would be the best evidence that a change in the chemical properties of the sugar has taken place?

a)

The sugar gets hotter.

b)

The sugar gets larger.

c)

The sugar turns into a liquid.

d)

The sugar turns black.

47.

A student had a beaker with a small amount of baking soda.  The student added a few drops of pickle juice to the baking soda and observed fizzing and bubbling.  Based on observation, which of these can the student conclude?

a)

A chemical reaction produced a solid.

b)

No chemical reaction took place.

c)

Only a physical change happened.

d)

A chemical reaction produced a gas.

48.
Anything you can see, smell, feel, taste or hear about a substance
a)
Chemical property
b)
chemical reaction
c)
physical change
d)
physical property
49.
A reaction that gives off energy in the form of heat: hand-warmers
a)
endothermic reaction
b)
exothermic reaction
50.
Energy is absorbed in this reaction: Mom putting a cold rag on your head when you have a fever
a)
Endothermic reaction
b)
Exothermic reaction
51.
new substances formed in the reaction
a)
chemical equation
b)
reactants
c)
products
52.
Substance you begin with
a)
chemical equation
b)
reactants
c)
products
53.
Is spoiling food a physical or chemical change?
a)
phyiscal
b)
chemical
54.
Is melting ice a chemical or physical change?
a)
chemical
b)
physical
55.
Is frying an egg a physical or chemical change?
a)
chemical
b)
physical
56.
Salt dissolves in water
a)
physical Change
b)
chemical change
57.
Which is a chemical change?
a)
freezing fruit juice
b)
slicing a potato
c)
boiling water
d)
copper metal turning green
58.

Nitrogen (N), Oxygen (O), Carbon (C) and Hydrogen are the most common example of ?

a)

Molecules

b)

Elements

c)

Compounds

d)

Substances

59.

It is a combination of two or more substances.

a)

Substances

b)

Mixtures

c)

Elements

d)

Compound

60.

In a solution this is the dissolving substance.

a)

Powder

b)

Solute

c)

Liquid

d)

Gas

61.

Is water a element or compound?

a)

Element

b)

Compound

62.

When substances are combined as a mixture, _______________.

a)

they keep their physical properties

b)

their physical properties combine

c)

their physical properties change

d)

they lose some of their physical properties

63.

Salt can be separated from water by using

a)

tweezers

b)

sieve

c)

magnet

d)

evaporation

64.

What tool can you use to BEST separate a mixture of sand and water?

a)
hands
b)

paper filter

c)
tweezers
d)

strainer

65.
What tool can you use to separate a mixture of rocks and sand the fastest? 
a)

strainer

b)
tweezers
c)
magnet
d)
hands
66.

Is tea a mixture or a solution?

a)

Mixture

b)

Solution

67.

Is soap a mixture or solution?

a)

Mixture

b)

Solution

68.

What is a mixture?

a)

The combination of two or more substances.

b)

An ingredient.

c)

A liquid.

d)

A gas.

69.

Is fruit salad a mixture or solution?

a)

Mixture

b)

Solution

70.

What is a solution?

a)

A type of mixture where one substance dissolves in another

b)

An ingredient.

c)

A liquid.

d)

A gas.

71.

Is Kool-Aid a mixture or a solution?

a)

Mixture

b)

Solution

72.

Is salad a mixture or a solution?

a)

Mixture

b)

Solution

73.

How can we remove sugar from a sugar water solution?

a)

Melting

b)

Magnet

c)

Put it out in the sun / heat it up / Evaporation

d)

Tweezers

74.

Is oil and water a mixture or a solution?

a)

Mixture

b)

Solution

75.

In a mixture, the properties of a substance ______________

a)

do not change

b)

change forms

c)

turn into a liquid

d)

become solid

76.

Is cereal a mixture or solution?

a)

Mixture

b)

Solution

77.

Is sand and iron filings a mixture or solution?

a)

Mixture

b)

Solution

78.

When a substance dissolves, that means its particles _________.

a)

spread out evenly

b)

disappear

c)

turn into water

79.
What is matter?
a)
Anything that has mass and occupies space
b)
Anything that has mass
c)
Anything that is made of air
d)
ALL of them 
80.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

81.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

82.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

83.

If I added 27 grams of salt to water and separated the solution with a hot plate (heating it up and evaporating the liquid), what amount of salt would be left behind?

a)

20 grams

b)

0 grams

c)

27 grams

d)

10 grams

84.

A solution is a mixture of one or more substances ___________ evenly into another substance.

a)

dissolved

b)

evaporated

c)

carried

d)

split

85.

A combination of two or more substances where each substance keeps its own properties and both can be easily separated

a)

mixture

b)

solution

c)

substance

d)

physical change

86.

Increasing the ____________ will allow the particles to move faster

a)

temperature

b)

rate

c)

catalyst

d)

subscript

87.

Breaking the reactant into smaller pieces is allowing for more _______________ which increases the rate of the reaction

a)

temperature

b)

surface area

c)

chemical changes

d)

sub reactants

88.

How many total atoms are in 2H2O

a)

2

b)

4

c)

6

d)

8

89.

How many elements are in this chemical formula?

NaOH

a)

1

b)

2

c)

3

d)

4

90.

How many atoms are in the formula?

NaOH

a)

4

b)

3

c)

2

d)

1

91.

How many elements are in this formula?

HNO3

a)

1

b)

2

c)

3

d)

4

92.

How many elements are in this formula?

Li2O

a)

1

b)

2

c)

3

d)

4

93.

How many elements and atoms are there in this formula?

CaClO3

a)

1, 5

b)

2, 4

c)

3, 5

d)

4, 4

94.

How many elements are there in this formula?

H2COCH2

a)

4

b)

3

c)

2

d)

1

95.

How many atoms are there in this formula?

H2COCH2

a)

5

b)

4

c)

6

d)

7

96.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
97.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
98.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
99.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
100.
How many atoms of Oxygen are in Fe(NO3)3 ?
a)
6
b)
3
c)
9
d)
1
101.

Are there any compounds on the periodic table?

a)

yes there are many

b)

no because only elements are on the periodic table

c)

I think they are?

d)

there is no way to tell

102.

How many Hydrogen atoms are in 4H2O?

a)

6

b)

8

c)

2

d)

4

103.

How many Oxygen atoms are in H2O?

a)

1

b)

2

c)

0

d)

4

104.

How many Magnesium atoms are in 10MgCl2?

a)

10

b)

5

c)

20

105.

How many Sodium atoms are in 6NaCl?

a)

1

b)

12

c)

6

106.

What is C2H8O ?

a)

Element

b)

Letters

c)

Numbers

d)

Compound

107.

How many Aluminum atoms are in Al2O3?

a)

3

b)

2

c)

5

d)

1

108.

A subscript is the small number below the element symbol that tells the number of _______ of that element.

a)

atoms

b)

valence electrons

c)

protons

d)

elements

109.

How many atoms are there TOTAL in H2SO4 ?

a)

6

b)

5

c)

7

d)

3

110.

How many Nitrogen atoms are in (NH₄)₂CrO₄?

a)

1

b)

2

c)

8

d)

16

111.

How many atoms of Hydrogen are in this compound?

a)

1

b)

2

c)

3

d)

4

112.

How many Oxygen atoms are in Al₂(SO₄)₃?

a)

4

b)

12

c)

7

d)

24

113.

How many Hydrogen atoms in 3(NH₄)₂CrO₄?

a)

4

b)

2

c)

8

d)

24

114.

How many Nitrogen atoms are in the in H2C3O4N5?

a)

2

b)

3

c)

4

d)

5

115.

How many elements are present in this compound? (Careful!)

Mg2As3COHNi2

a)

2

b)

4

c)

6

d)

10

116.

How many atoms are present if there is no subscript following the element symbol?

a)

0

b)

2

c)

only 1

d)

1 million

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