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g9 language of chemistry by khayrattee yasser

Total questions: 40

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

the symbol for calcium is

a)

c

b)

Ca

c)

ca

d)

CA

2.

What are the products in this chemical reaction?

a)

calcium and oxygen

b)

Ca and CaO

c)

2Ca and O2

d)

2CaO

3.
 2H2O
How many Hydrogen atoms are present?
a)
2
b)
4
c)
1
d)
10
4.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
5.

which is found on the periodic table

a)

Compound

b)

Element

6.
What is the symbol for chlorine?
a)
C
b)
Ch
c)
Ce
d)
Cl
7.
Which of these elements has a symbol which DOES NOT include a letter from its name?
a)
iron
b)
helium
c)
magnesium
d)
zinc
8.
What is the symbol for the element Neon?
a)
Na
b)
Ne
c)
He
d)
N
9.
A _________ is a substance made of two or more DIFFERENT elements chemically combined. 
a)
mixture
b)
compound
c)
substance 
10.
A mixture can be separated by ________ means. 
a)
physical
b)
chemical
11.

Salt Water

a)

Compound

b)

Mixture

12.

A bar of gold is made of only one ______

a)

Plasma

b)

Mixture

c)

Element

d)

Compound

13.

The common name for calcium carbonate is

a)

baking soda

b)

chalk

c)

charcoal

d)

sugar

14.
CO2
a)
Element
b)
Compound
15.
CaCo3
a)
Element
b)
Compound
16.

The chemical formula for glucose is

a)

CuSO4

b)

C6H12O6

c)

H2O

d)

CaCO3

17.
What are the three states of matter?
a)
solid, volume, mass
b)
density, volume, mass
c)
solid, liquid, gas
d)
density, gas, volume
18.

Iron + oxygen = rust is an example of a ___________.

a)

physical change

b)

chemical change

c)

mass

d)

volume

19.

On Periodic Table, how are elements ordered?

a)

color

b)

shape

c)

atomic number

d)

alphabetically

20.

How many atoms of Hydrogen are in this compound

a)

1

b)

2

c)

3

d)

4

21.
5H2O
How many atoms of Hydrogen?
a)
2
b)
7
c)
10
d)
5
22.
Elements and compounds are always ___.
a)
pure
b)
mixed
23.

Carbon Dioxide (CO2) is an ELEMENT?

a)

True

b)

False

24.

Is the following equation balanced?

4Fe + 3O2 --> 2Fe2O3

a)

yes

b)

no

25.

How many Mn atoms are found in the following compound?

3Cr(MnO4)6

a)

3

b)

4

c)

6

d)

18

26.

__Na + __Cl2 --> __NaCl

a)

1,1,2

b)

2,1,2

c)

2,1,1

d)

already balanced

27.

CaCO3 is the

a)

Common name

b)

Scientific name

c)

Chemical formula

28.

The common name for sodium chloride (NaCl) is

a)

sugar

b)

salt

c)

road salt

29.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

CO2 + H2O --> O2 + Sugar

b)

O2 + H2O --> CO2 + Sugar

c)

CO2 + sugar + H2O --> O2

d)

CO2 + O2 + H2O --> Sugar

30.

Which of the following represents an element?

a)

H2O

b)

NaCl

c)

H2

d)

CaCO3

31.

What cannot be broken down into other substances?

a)

Element

b)

Compound

c)

Mixture

d)

Solid

32.

What coefficient should go in the blank space to balance the chemical equation?

2Al +____ HCl → 2AlCl3 + 3H2

a)

1

b)

2

c)

3

d)

6

33.

How many elements are there in C6H12O6?

a)

3

b)

6

c)

24

d)

None of the above answers

34.

How many hydrogen atoms are there in 3C2H6?

a)

2

b)

3

c)

6

d)

18

35.

The total number of atoms in this compound is

a)

4

b)

7

c)

9

d)

12

36.

Identify the elements in this compound.

a)

Carbon, Helium, Oxygen

b)

Chromium, Hydrogen, Oxygen

c)

Calcium, Hydrogen, Oxygen

d)

Carbon, Hydrogen, Oxygen

37.
Nonmetals are located in what section of this periodic table?
a)
Blue
b)
Yellow
c)
Pink
38.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
39.
How many ATOMS are in the following compound:  C2H4O2
a)
3
b)
8
c)
1
d)
6
40.

valency of argon is

a)

1

b)

2

c)

4

d)

0

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