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Yr10 Chemistry trial test

Total questions: 50

Worksheet time: 53mins

Name
Class
Date
1.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
2.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
3.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
4.
If an atom has 3 electrons, how many protons does it have?
a)
1
b)
2
c)
4
d)
3
5.
If the number of protons equal the number of _____, the atom will have no charge
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
6.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus 
7.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
8.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
9.
An atom with an unequal number of protons and electrons is said to have (a) ___.
a)
no charge
b)
balance
c)
charge
d)
unbalance
10.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
11.
Ions are: 
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
12.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
13.
During a chemical reaction, atoms are NOT
a)
Rearranged
b)
Created
c)
Broken
d)
Growing
14.

Two or more elements chemically combined is called a(n)

a)

compound

b)

mixture

c)

element

d)

atom

15.

Hydrogen is an example of a(n)

a)

element

b)

compound

16.

How many electrons are in the atom?

a)

2

b)

3

c)

4

d)

7

17.

What is the atomic number for this element?

a)

3

b)

4

c)

6

d)

7

18.

What is the atomic mass?

a)

22

b)

26

c)

48

d)

70

19.

What is the atomic number?

a)

19

b)

20

c)

39

d)

29

20.

How many protons does the element have?

a)

26

b)

30

c)

56

d)

82

21.

How many neutrons does the element have?

a)

22

b)

26

c)

48

d)

70

22.

How many electrons does this element have?

a)

26

b)

30

c)

56

d)

82

23.

A group of elements that conduct heat and electricity well is called

a)

metals

b)

nonmetals

c)

metalloids

24.

A group of elements that conduct heat and electricity poorly is called

a)

nonmetals

b)

metals

c)

metalloids

25.

A column on the periodic table is called a

a)

period

b)

group

c)

colony

d)

herd

26.

Group 18 contains element that do not combine with other elements naturally. These are called the

a)

noble gases

b)

carbon group

c)

boron group

d)

metalloids

27.

The atomic number tells us

a)

how many protons plus neutrons an element has.

b)

how many protons or neutrons an element has.

c)

how many protons or electrons an element has.

d)

how many protons, neutrons, and electrons an element has.

28.
How many protons does Carbon have?
a)
3
b)
4
c)
5
d)
6
29.
How many ATOMS are in the following compound:  C2H4O2
a)
3
b)
8
c)
1
d)
6
30.
Which of these elements has a symbol which DOES NOT include a letter from its name?
a)
iron
b)
helium
c)
magnesium
d)
zinc
31.
Which of the following is NOT a mixture? 
a)
NaCl + H2O
b)
C6H12O6 + H2O
c)
C6H12O6
d)
SiO2 +H2O
32.
The element Tellurium has the atomic mass of 127.60 and its atomic number is 52. How many neutrons are in the element Tellurium?
a)
179.60
b)
127.60
c)
52
d)
76
33.
The inner energy level can only hold ______ electrons.
a)
1
b)
0
c)
2
d)
18
34.
How many valence electrons does Chlorine have?
a)
1
b)
5
c)
7
d)
8
35.
How many valence electrons does Carbon have?
a)
4
b)
2
c)
3
d)
5
36.
Find the molar mass of C8H18.
a)
114 g/mol
b)
26 g/mol
c)
66 g/mol
d)
338 g/mol
37.
Determine the molar mass for CCl4
a)
154 g/mol
b)
47 g/mol
c)
189 g/mol
d)
82 g/mol
38.
What is the molar mass of sodium?
a)
11
b)
22.990
c)
45.98
d)
3
39.
What are the units for molar mass?
a)
grams
b)
amu
c)
grams/mole
d)
liters
40.
What is the molar mass of B2(CO3)3?
a)
81.632 g/mol
b)
94.842 g/mol
c)
38.822 g/mol
d)
201.648 g/mol
41.
How many particles are in a mole?
a)
602
b)
602 million
c)
602 moles
d)
6.02 x 1023
42.
Molar mass tells you
a)
the grams in an atom
b)
the atoms in a mole
c)
the moles in a gram
d)
the grams in a mole
43.
A mole of helium contains _____ atoms.
a)
2
b)
4.00
c)
6.02 x 10^23
d)
8
44.
How many Oxygen atoms are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
45.
Number of N in (NH₄)₂CrO₄
a)
1
b)
2
c)
8
d)
16
46.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
47.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
48.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
49.

The electronic configuration of sodium is?

a)

2,8,8

b)

2,8,1

c)

2,8,7

d)

2,8,5

50.

The electronic configuration of Cl is?

a)

2,8,1

b)

2,8,8

c)

2,8,7

d)

2,8,3

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