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Chemistry review for PS sem 2 exam 23

Total questions: 60

Worksheet time: 39mins

Name
Class
Date
1.

what charge do protons have

a)

negative

b)

no charge

c)

positive

d)

small

2.

neutrons have a __________ charge.

a)

positive

b)

negative

c)

no charge

d)

small

3.

electrons have a _______ charge.

a)

negative

b)

no charge

c)

positive

d)

small

4.
subatomic particles found on the outermost shell & responsible for the atom's reactivity
a)
neutrons
b)
valence electrons
c)
isotopes
d)
ions
5.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
6.
Atoms of the same element with a different number of neutrons
a)
Ion
b)
Gluons
c)
Isotope
d)
Quarks
7.
A charged atom
a)
Ion
b)
Isotope
c)
Electron Cloud
d)
Quark
8.
Arrangement of elements organized by atomic number
a)
Electron Cloud 
b)
Periodic Table 
c)
Electron Configuration
d)
None of these
9.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

10.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

11.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

12.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

13.

What would He (Helium) be categorized as on the periodic table?

a)

Nonmetal

b)

Metal

c)

Noble gas

d)

Transitional metal

14.

What does the atomic number represent?

a)

Number of PROTONS

b)

Number of PROTONS & NEUTRONS COMBINED

c)

Number of NEUTRONS

d)

Number of PROTONS, NEUTRONS, and ELECTRONS combined.

e)

Number of ELECTRONS

15.

Which of the following has a positive charge and a mass of 1 amu?

a)

PROTON

b)

NEUTRON

c)

ELECTRON

d)

ELEMENT

16.

Which SUB ATOMIC PARTICLE is almost MASSLESS?

a)

PROTON

b)

NEUTRON

c)

ELECTRON

d)

ATOM

17.
In the periodic table elements are arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
18.
Each row in the periodic table is called a 
a)
group
b)
period
c)
cluster
d)
unit
19.
Each column in the periodic table is called a 
a)
period
b)
group/family
c)
cluster
d)
unit
20.
A negatively charged particle that moves around the nucleus is a(n)
a)
proton
b)
neutron
c)
electron
d)
quark
21.
Which group/family of the periodic table is composed of inert (not reactive) gases? They are the ones boxed in in red in the picture.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
22.
Elements which are shiny, conduct electricity and conduct heat are called
a)
metals
b)
nonmetals
c)
metalloids
d)
ions
23.
The blue elements are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
24.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
25.

An isotope is the same element with a different number of...?

a)

Protons

b)

Neutrons

c)

Electrons

26.
How many valence electrons does Iodine have?
a)
6
b)
16
c)
7
d)
17
27.
An element's identity is determined by the number of
a)
electrons
b)
protons
c)
neutrons
d)
valence
28.
Elements in the same ________ are more chemically similar.
a)
group/family
b)
period
c)
club
d)
table
29.
The majority of elements on the periodic table are
a)
man made
b)
nonmetals
c)
metals
d)
gases
30.

How many energy levels are there Aluminum (#13)

a)

1

b)

2

c)

3

d)

4

31.

I have 2 energy levels and 5 valence electrons.

a)

Gold

b)

Carbon

c)

Nitrogen

d)

Aluminum

32.

Who invented the Periodic Table?

a)

Mendeleev

b)

Bohr

c)

Lewis

d)

Democritus

33.

Magnesium is in which of the following families?

a)

Alkali Metals

b)

Alkaline Earth Metals

c)

Halogens

d)

Noble Gases

34.

Bromine is in which of the following families?

a)

Alkali Metals

b)

Alkaline Earth Metals

c)

Halogens

d)

Noble Gases

35.

What charge would Phosphorus make if it was following the octet rule?

a)

3

b)

3-

c)

5

d)

5+

36.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
37.
How many dots would a Lewis Dot structure of Helium have?
a)
1
b)
2
c)
8
d)
0
38.

How does oxygen become an oxide ion?

a)

it loses 2 electrons

b)

it gains 2 electrons

c)

it shares electrons

d)

it releases energy

39.

Aluminum will react spontaneously with oxygen in the air to form aluminum oxide. Write the formula for the compound that is produced in this reaction.

a)

AlO

b)

Al2O3

c)

O3Al2

d)

Al6O3

40.

When an atom loses an electron, it becomes a

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

41.

Cations

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

42.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
43.
Covalent bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
44.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
45.
How are covalent bonds formed?
a)
Sharing of electrons
b)
Transfer of electrons
46.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
47.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
48.

Name CaCl2

a)

Calcium Chlorine

b)

Calcium Chloride

c)

Calcium Chlorate

d)

Calcium (II) Chloride

49.

Name C2H6

a)

Carbon Hydridie

b)

Carbon Hydroxide

c)

Dicarbon hexahydride

d)

carbon hexahydride

50.

The formula for Dihydrogen tetranitride

a)

HNO3

b)

H2N3

c)

H2N4

d)

HN

51.

The name for NO

a)

nitrogen oxide

b)

nitrogen monoxide

c)

nitrogen oxygen

d)

nitrogen hydroxide

52.

Given the reaction 2H2 + O2 --> 2H2O. Which is a product?

a)

2H2

b)

O2

c)

2H2O

d)

-->

53.

Given the reaction 2H2 + O2 --> 2H2O. The number in front of hydrogen is called a _______.

a)

subscript

b)

supersubscript

c)

coefficient

d)

exponent

54.

Given the reaction 2H2 + O2 --> 2H2O. What is the small number behind the oxygen called?

a)

subscript

b)

supersubscript

c)

coefficient

d)

exponent

55.

Chemical equations need to have the same number of atoms on both the reactants and products side. Why do we balance equations?

a)

Law of conservation of energy

b)

Law of conservation of mass

c)

Law of balancing equations

d)

Theory of chemistry

56.

Balance the equation Ba + HCl --> H2 + BaCl2

a)

1, 2, 2, 1

b)

1, 2, 1, 2

c)

1, 2, 1, 1

d)

2, 1, 2, 1

57.

Represents the number of units of each substance that take part in the reaction.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

e)

Law of Conservation of Mass

58.

On the left side of the reaction. These are the chemicals that you start with.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

e)

Law of Conservation of Mass

59.

On the right side of the reaction. These are the chemical that are made.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

e)

Law of Conservation of Mass

60.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced

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