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Quiz 3 Form 4

Total questions: 40

Worksheet time: 3hrs 36mins

Name
Class
Date
1.
How many carbon atoms (C) are in a CO2 molecule?
a)
1
b)
2
c)
3
d)
0
2.
How many Oxygen atoms (O) are in a  molecule  of CO2
a)
1
b)
2
c)
3
d)
0
3.
The small number to the right of an elemental symbol  ( H2) is called?
a)
 a subscript 
b)
a coefficient 
c)
a variable 
d)
a divisor 
4.
 More than two atoms stuck together is called a ...................
a)
element 
b)
molecule 
c)
Chemical property 
d)
Physical property 
5.
There are over 100 different kinds of atoms these different atoms are known as ....................
a)
elements 
b)
mixtures
c)
chemical bond 
d)
chemistry 
6.
A mixture that can be easily be separated into his different parts ( think fruit salad)
a)
heterogeneous mixtures
b)
homogeneous mixtures 
7.
A mixture that is mixed so well that it would be impossible to separate out its different parts ( think milkshake)
a)
heterogeneous mixture 
b)
homogeneous mixture 
8.
A series of numbers and letters that are used to represent a molecule
a)
physcial property 
b)
chemical property 
c)
chemical formula 
d)
atom
9.
When a molecule is made up of more than two different elements ( Example CO2)  we call this .......................
a)
a mixture 
b)
atom
c)
a compound 
10.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
11.
Element or compound?
H2O
a)
element
b)
compound
12.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
13.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
14.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
15.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
16.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
17.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
18.
How many elements are present in this compound?
Mg2As3COHNi2
a)
2
b)
4
c)
6
d)
10
19.
How many molecules are in 10MgCl2?
a)
10
b)
2
c)
30
d)
13
20.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
21.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
22.

In a chemical formula, the total positive charge and negative charge must add up to equal _____.

a)

0

b)

1

c)

2

d)

3

23.

When writing chemical formulas, the ______ is always written first.

a)

Nonmetal

b)

Least electronegative

c)

negative

d)

positive

24.

What is the correct name of the compound CaCl2?

a)

Calcium dichloride

b)

Calcium dichlorine

c)

Calcium chlorine

d)

Calcium chloride

25.

What is the correct name for the compound LiF?

a)

Lithium fluoride

b)

Lithium fluorine

c)

monolithium monofluoride

d)

lithium monofluoride

26.

What is the correct formula for Ammonium phosphate?

a)

NH4PO4

b)

NH43PO4

c)

(NH4)3PO4

d)

NH4(PO4)3

27.

What is the correct name of the compound Mg(NO3)2?

a)

Magnesium nitride

b)

Magnesium dinitrate

c)

Monomagnesium dinitrate

d)

Magnesium nitrate

28.

What is the correct formula for aluminum sulfide?

a)

Al3S2

b)

Al2S

c)

AlS2

d)

Al2S3

29.

What is the correct name of the compound NO2?

a)

Nitrogen oxide

b)

Mononitrogen dioxide

c)

Nitrogen dioxide

d)

Dinitrogen monoxide

30.

What is the correct formula for the compound calcium carbide?

a)

CaC

b)

Ca2C

c)

CaC2

d)

Ca2C4

31.

What is the name of the compound P3O5?

a)

Triphosphorus pentaoxide

b)

Phosphorus pentaoxide

c)

Triphosphorus oxide

d)

Phosphorus oxide

32.

How many atoms of oxygen are in a molecule of Ca3(PO4)2

a)

1

b)

2

c)

4

d)

8

33.

What is the correct formula of the potassium oxide?

a)

KO

b)

K2O

c)

KO2

d)

K2O2

34.

What is the name of the compound NH4OH?

a)

Nitrogen oxygen hydride

b)

Nitrogen hydroxide

c)

Ammonium oxygen hydride

d)

Ammonium hydroxide

35.

_______ is an ion that contains more than one atom.

a)

monatomic ion

b)

complex ion

c)

polyatomic ion

d)

diatomic ion

36.

What is the coefficient for this formula? 9NaCl2

a)

9

b)

2

c)

1

d)

11

37.

This tells you how many atoms of an element you have in a chemical formula

a)

coefficient

b)

subscript

c)

chemical symbol

d)

atomic number

38.

This equation is not balanced. Which element has more atoms on one side than the other?

2HCl + CaCO3 yields CaCl + H2O + CO2

a)

Cl

b)

Ca

c)

H

d)

O

39.

Is this equation balanced?

C + 2H2 yields CH4

a)

No

b)

Yes

40.

Is this equation balanced?

CH4 + O2 yields CO2 + 2H2O

a)

yes

b)

no

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