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Unit 2 Part 1: Chemistry Extra Credit

Total questions: 100

Worksheet time: 25hrs 0mins

Name
Class
Date
1.

Mass is the amount of __________ in an object

a)

matter

b)

weight

c)

space

d)

volume

2.

Which liquid is least dense?

a)

red

b)

yellow

c)

green

d)

blue

3.
state of matter with a fixed shape; does not take the shape of its container
a)
solid
b)
liquid
c)
gas
d)
water
4.
state of matter that spreads out to completely fill its container
a)
solid
b)
liquid
c)
gas
d)
water
5.

when water changes from a liquid to a gas - caused by heat

a)

evaporation

b)

condensation

c)

freezing

d)

melting

6.

when water vapor (a gas) is cooled and forms liquid water

a)

evaporation

b)

condensation

c)

freezing

d)

melting

7.

What must be done to change water from liquid to solid?

a)

Raise the temperature.

b)

Lower the temperature.

8.

What is a Solid?

a)

Matter that has a fixed shape and size.

b)

Matter that has a fixed size and no fixed shape

c)

Matter that has no fixed shape or size

d)

Matter that has no fixed shape and size

9.

In which state of matter will there be the LARGEST space between molecules?

a)

Solid

b)

Liquid

c)

Gas

10.

The measure of how much space something takes up is ______.

a)

matter

b)

mass

c)

volume

d)

density

11.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
12.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
13.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
14.

Check all phase changes in which heat is removed.

a)

Freezing

b)

Deposition

c)

Vaporization

d)

Condensation

e)

Melting

15.

An example of deposition is ...

a)

laundry drying

b)

dry ice changing to gas

c)

frost on a cold morning

d)

dew on a warm morning

16.

What causes a substance to change phases?

a)

when heat is added or taken away

b)

only when particles move faster

c)

when particles stop moving

d)

when seasons change

17.

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

a)

cell

b)

nucleus

c)

atom

d)

electron

18.

What are any of the various self-contained units of matter or energy that are fundamental parts of all matter. These particles include electrons, protons, and neutrons.

a)

subatomic particles

b)

elements

c)

nucleus

d)

electron cloud

19.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

20.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

21.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

22.

What is the center of an atom containing protons and neutrons?

a)

nucleus

b)

neutron

c)

proton

d)

electron cloud

23.

What is the number of protons in the nucleus of an atom that determines the chemical properties of an atom?

a)

mass number

b)

atomic mass

c)

atomic number

d)

atomic symbol

24.
What electrical charge does a proton have?
a)
+1
b)
0
c)
-1
d)
+2
25.

What mass does a neutron have?

a)

1 amu

b)

0 amu

c)

-1 amu

d)

+2 amu

26.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
27.
Which particle is negatively charged?
a)
proton
b)
atom
c)
neutron
d)
electron
28.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
29.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
30.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

31.

A physical blend of 2 or more components is called a ____.

a)

type of element

b)

mixture

c)

chemical reaction

d)

physical property

32.

The lemonade in this glass is what type of mixture?

a)

Heterogeneous

b)

Homogeneous

33.

A mixture in which the composition is NOT uniform throughout is called a _____ mixture.

a)

Heterogeneous

b)

Homogeneous

34.

Classify milk as one of these 4 types of matter.

a)

Element

b)

Compound

c)

Homogeneous mixture

d)

Heterogeneous mixture

35.

What kind of matter is this?

a)

Element

b)

Compound

c)

Mixture

36.

What kind of matter is this?

a)

Element

b)

Compound

c)

Mixture

37.

What kind of matter is this?

a)

Element

b)

Compound

c)

Mixture

38.

What kind of matter is this?

a)

Element

b)

Compound

c)

Mixture

39.

What kind of matter is salt (NaCl)?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

40.

A _____________ contains a variety of elements and compounds that are not chemically combined with each other.

a)

compound

b)

element

c)

molecule

d)

mixture

41.

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

a)

mixture

b)

pure substance

c)

compound

d)

element

42.

A ______________ mixture is one that does not have a uniform composition.

a)

heterogeneous

b)

homogenous

c)

pure substance

43.

_______________ are mixtures in which its particles are too big to stay mixed without being stirred or shaken.

a)

Solutions

b)

Colloids

c)

Suspensions

44.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

45.

What is the chemical formula for this molecule?

a)

NN

b)

2N

c)

 N2N_2  

d)

 NO2NO_2  

46.

What is an element?

a)

a molecule made with more than one atom

b)

matter consisting of one kind of atom

c)

two or more substances physically combined

d)

a mixture in which the different parts are visible

47.

What is the chemical formula for this molecule?

a)

OH

b)

HO

c)

HHO

d)

H2OH_2O

48.

Table sugar and table salt are examples of ...

a)

atoms

b)

elements

c)

mixtures

d)

compounds

49.

Substances that cannot be broken down chemically into other substances are...

a)

elements

b)

compounds

c)

mixtures

d)

solutions

50.

A ______________ is made up of different kinds of atoms chemically combined.

a)

element

b)

compound

c)

mixture

d)

molecule

51.

Instant coffee is made by dissolving a powder in hot water. Instant coffee is a ___________________ .

a)

pure substance

b)

mixture

52.

Methane contains one atom of carbon and four atoms of hydrogen that are chemically bonded. It is a main component of natural gas. Methane is a ___________________ .

a)

pure substance

b)

mixture

53.

In the lab, Maya is using a substance that has a chemical formula and contains two different elements. Maya’s substance is a(n) _______ .

a)

element

b)

compound

c)

heterogeneous mixture

d)

homogenous mixture/solution

54.

Granite is an igneous rock that contains the minerals quartz, feldspar, mica and others. The exact composition will vary from sample to sample. Granite is a(n) _______ .

a)

element

b)

compound

c)

heterogeneous mixture

d)

homogenous mixture/solution

55.

What two types of matter are pure substances?

a)

elements and solutions

b)

compounds and mixtures

c)

elements and compounds

d)

mixtures and solutions

56.

Kool aid, a liquid containing water mixed evenly with kool aid powder is a

a)

element

b)

compound

c)

heterogeneous mixture

d)

solution

57.

Kool aid contains kool aid powder dissolved in water. What is the solvent in Kool aid?

a)

water

b)

Kool aid powder

58.
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.
59.
What is a substance that is dissolved in another substance? 
a)
solution
b)
solute
c)
solvent
d)
compound
60.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
61.

How many ELEMENTS are in the chemical formula H2O?

a)

1

b)

2

c)

3

d)

4

62.

How many TOTAL ATOMS are there in the chemical formula H2O?

a)

1

b)

2

c)

3

d)

4

63.

How many ELEMENTS are there in the chemical formula NaO2?

a)

1

b)

2

c)

3

d)

4

64.

How many Hydrogen (H) atoms are there in the chemical formula H2O?

a)

1

b)

2

c)

3

d)

4

65.

What is the coefficient in this chemical formula:


3H2O

a)

1

b)

2

c)

3

d)

4

66.

What information does the coefficient tell us in an chemical formula?

a)

Amount of molecules

b)

Amount of atoms

c)

Amount of elements

67.

What information does the subscript tell us in a chemical formula?

a)

Amount of molecules

b)

Amount of elements

c)

Amount of compounds

68.
What the atomic number of Chlorine (Cl)?
a)
9
b)
35
c)
17
d)
6
69.
How many protons in an atom of copper (Cu)?
a)
64
b)
29
c)
27
d)
6
70.
How many protons in an atom of calcium (Ca)?
a)
20
b)
40
c)
19
d)
12
71.
The sum of the protons and neutrons in the nucleus of an atom
a)
Atomic Number
b)
Compound
c)
Electrons
d)
Mass Number (also called Atomic Mass)
72.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
73.

Identify the unknown atom.

a)

Flourine

b)

Beryllium

c)

Boron

d)

Helium

74.

How do you calculate the number of neutrons? *

a)

Mass = Atomic number - Neutrons

b)

Mass - Atomic number = Neutrons

c)

Atomic number = Neutrons

75.

A mixture whose parts can be seen and are unevenly mixed is called a ________________ mixture.

a)

elemental

b)

compound

c)

homogeneous

d)

heterogeneous

76.

Which of the following correctly identifies the charge of each subatomic particle?

a)

Proton- Positive; Neutron- No charge; Electron- Negative

b)

Proton- Positive; Neutron- Negative; Electron- No charge

c)

Proton- Negative; Neutron- No charge; Electron- Positive

d)

All are positively charged.

77.

Any material consisting of only one type of atom is classified as what?

a)

A compound

b)

An element

c)

A heterogeneous mixture

d)

A homogeneous mixture

78.

Which types of matter are considered pure substances?

a)

Elements

b)

Elements and compounds

c)

Compounds

d)

Elements and mixtures

79.

Pure Substance or Mixture?

neon

a)

pure substance

b)

mixture

80.

Pure Substance or Mixture?

magnesium (Mg)

a)

pure substance

b)

mixture

81.

Pure Substance or Mixture?

mercury (Hg)

a)

pure substance

b)

mixture

82.

Homogeneous or Heterogeneous?

tap water

a)

homogeneous

b)

heterogeneous

83.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

carbon

84.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

85.

A physical blend of 2 or more components is called a ____.

a)

type of element

b)

mixture

c)

chemical reaction

d)

physical property

86.

Oil and water are each homogeneous mixtures. What happens to them when they are mixed?

a)

They form a heterogeneous mixture.

b)

They form a pure substance.

c)

They form a phase.

87.

What type of substance is shown?

a)

compound

b)

heterogeneous mixture

c)

homogeneous mixture

d)

element

88.

A compound is represented by its _______.

a)

atomic number

b)

chemical number

c)

chemical formula

d)

number of atoms

89.

Which classification of matter is a pure substance?

a)

Elements

b)

Elements and compounds

c)

Compounds

d)

Elements and mixtures

e)

Mixtures

90.

A material made of combined substances that each retain their own properties is called what?

a)

A mixture

b)

A compound

c)

A pure substance

d)

An element

91.

What is the difference between an element and a compound?

a)

Elements are made of more than one atom.

b)

Compounds have uniform composition.

c)

Compounds are made of more than one type of atom.

d)

Only elements are pure substances.

92.

_______ can be separated by physical means.

a)

An element

b)

A compound

c)

Pure substances

d)

Mixtures

93.

Nickel is an example of ______.

a)

an element

b)

a compound

c)

a homogeneous mixture

d)

a heterogeneous mixture

94.

Which of the following is an example of an element?

a)

A

b)

B

c)

C

d)

D

95.

Which of the following is an example of a compound?

a)

A

b)

B

c)

C

d)

D

96.

Which of the following is an example of a mixture?

a)

A

b)

B

c)

C

d)

D

97.
Salt dissolved in water.
a)
colloid
b)
solution
c)
element
d)
compound
98.
Students placed a black block and a white block on each side of a balance.
Based on the results, what can the students say about the two blocks?
a)
The white block is wider and taller than the black block.
b)
The white block has more mass than the black block.
c)
The black block has a lower temperature than the white block.
d)
The black block has more mass than the white block.
99.

Fruit salad is an example of...

a)

a homogenous mixture

b)

a heterogenous mixture

c)

a compound

100.

This represents 1 carbon element, and 2 oxygens.

a)

CO4

b)

CO3

c)

CO2

d)

HeO9

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