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Chemistry - Matter Review

Total questions: 58

Worksheet time: 2hrs 56mins

Name
Class
Date
1.

How many of the following substances are elements?

 SS  | N2O4N_2O_4  | FeFe  | O2O_2  | LiFLiF  | SrSr  | AlAl  

a)

5

b)

3

c)

4

d)

6

2.

Which of the following is NOT a compound?

a)

HClHCl

b)

NaClNaCl

c)

ClCl

d)

CO2CO_2

3.

Which of the following represents an element?

a)

H2OH_{2_{ }}O

b)

NaClNaCl

c)

H2H_2

d)

CaCO3CaCO_3

4.

What cannot be broken down into other substances?

a)

compound

b)

solids

c)

mixture

d)

element

5.

What is made up of two or more elements that are chemically combined?

a)

element

b)

mixture

c)

compound

d)

solid

6.

This picture represents which of the following?

a)

element

b)

mixture

c)

compound

7.

This picture represents which of the following?

a)

element

b)

mixture

c)

compound

8.

A pure substance containing only one type of atom is...

a)

element

b)

mixture

c)

compound

9.

 C2H6OC_2H_6O  | C8H18C_8H_{18}  | CH3CH2BrCH_3CH_2Br  | C4H10OC_4H_{10}O  

Which of the following substances have the same number of CARBON atoms?


a)

substances 1 and 2

b)

substances 2, 3, and 4

c)

substances 2 and 3

d)

substances 1 and 3

10.

Tap water (water, salt & minerals) is an example of a(n):

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

11.

Methane (CH4) is an example of a(n):

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

12.

Chicken noodle soup is an example of a(n):

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

13.

How would you classify the matter in the picture above?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

14.

The image shows a mixture of concrete, nails, and saw dusts. What technique is best to use to separate the nails from the saw dusts?

a)

sieving

b)

chromatography

c)

decantation

d)

magnetic separation

15.

Dyes in water soluble markers may be separated by means of

a)

Simple distillation

b)

Crystallisation

c)

Chromatography

d)

Filtration

16.

separates components of mixture of liquids with different densities that don't mix together

a)

MAGNETIC SEPARATION

b)

MANUAL PICKING

c)

SEPARATING FUNNEL

d)

SIEVING

e)

FILTERING

17.

is used to separate solid mixtures with different sizes

a)

MAGNETIC SEPARATION

b)

MANUAL PICKING

c)

DECANTATION

d)

SIEVING

e)

FILTERING

18.

separates components of a mixture of liquids with very close but different boiling points

a)

EVAPORATION

b)

DISTILLATION

c)

FRACTIONAL DISTILLATION

d)

SIEVING

e)

FILTERING

19.

separates soluble solids in a solution by evaporating the liquid component leaving the solid component behind

a)

CRYSTALIZATION

b)

DISTILLATION

c)

FRACTIONAL DISTILLATION

d)

SIEVING

e)

FILTERING

20.

What type of separation is used ?

a)

MAGNETIC SEPARATION

b)

MANUAL PICKING

c)

DECANTATION

d)

SIEVING

e)

FILTERING

21.

what separation method is used if you want to separate water from dissolved sugar then retain water and the sugar?

a)

EVAPORATION

b)

DISTILLATION

c)

FRACTIONAL DISTILLATION

d)

SIEVING

e)

FILTERING

22.

Which of the following can be used for separating solutions?

a)

Filtration

b)

Magnet

c)

Distillation

d)

Sieving

e)

Decantation

23.

Which of the following is best used for separating suspensions?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Sieving

e)

Separating Funnel

24.

Which subatomic particle has a positive charge?

a)

proton

b)

neutron

c)

electron

d)

midichlorian

25.

Which subatomic particle has a negative charge?

a)

proton

b)

neutron

c)

electron

d)

cybertron

26.

What is the center of an atom called?

a)

The headquarters

b)

The centrometer

c)

The hypothesis

d)

The nucleus

27.

The nucleus of an atom contains which subatomic particles?

a)

protons and electrons

b)

protons and neutrons

c)

electrons and neutrons

d)

protons, electrons, and neutrons

28.

How many electrons does an atom of Krypton (Kr) have?

a)

36

b)

83.80

c)

48

d)

119.80

29.

How many protons are present in phosphorus (P)?

a)

15

b)

16

c)

31

d)

46

30.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
31.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
32.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
33.
What quantities vary between isotopes of an element?
a)
protons, electrons, and atomic mass
b)
protons, electrons, and atomic number
c)
neutrons and electrons
d)
neutrons and atomic mass
34.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8
35.
If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?     I. 7735X  II. 7733X  III. 8137X  IV. 8135 X
a)
I and II
b)
III and IV
c)
I and IV
d)
I and III
36.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
37.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
d)
neutrons balance the protons and electrons
38.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
39.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

40.

How many protons, neutrons, and electrons?

a)

proton = 6, neutron = 4, electron = 1

b)

proton = 4, neutron = 4, electron = 5

c)

proton = 1, neutron = 6, electron = 10

d)

proton = 4, neutron = 2, electron = 3

41.

How many protons, neutrons, and electrons?

a)

proton = 16, neutron = 8, electron = 10

b)

proton = 8, neutron = 16, electron = 8

c)

proton = 8, neutron = 8, electron = 10

d)

proton = 6, neutron = 2, electron = 6

42.

What is a negative ion called?

a)

anion

b)

cation

c)

covalent

d)

isotope

43.

What is a positive ion called?

a)

anion

b)

cation

c)

isotope

d)

covalent

44.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
45.

An element has two isotopes that are naturally occurring; the first has a mass of 10.44 amu and is 28.2% abundance. The second is 11.21 amu and is 71.8% abundance. Use this information to find the average atomic mass.

a)

10.83 amu

b)

11.0 amu

c)

10.99 amu

d)

10.9 amu

46.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
47.
What do these symbols represent?
a)
alpha particle
b)
beta particle
c)
neutron
d)
gamma ray
48.
What process is modeled by the equation?
a)
alpha decay
b)
beta decay
c)
fission
d)
fusion
49.
What process is modeled with this equation?
a)
alpha decay
b)
beta decay
c)
fission
d)
fusion
50.
What type of nuclear equation is this?
a)
fusion
b)
fission
c)
alpha
d)
beta
51.
What is one problem with using nuclear fission as an energy source?
a)
finding radioactive elements that have longer half-lives
b)
finding ways of storing radioactive wastes
c)
finding compounds to cool heated water
d)
finding non-radioactive elements for reactors
52.
Why does an atom undergo beta decay?
a)
It has too many electrons.
b)
It has an atomic number greater than 83
c)
It has more neutrons than protons
d)
It has more protons than neutrons
53.
What happens to the atomic number during alpha decay?
a)
The atomic number decreases by 4
b)
The atomic number increases by 1
c)
The atomic number decreases by 2.
d)
The atomic number stays the same.
54.
Gamma rays have a _____ charge
a)
0
b)
+1
c)
-1
d)
+2
55.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
56.

When nuclei decay, massive amounts of __________ is released.

a)

energy

b)

electrons

c)

protons

d)

neutrons

57.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
58.

The mass number of Neptunium (Np) is (a)   .

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