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structure of matter

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.
What is the basic unit of matter and is the smallest particle of an element?
a)
Atoms
b)
Elements
c)
Compounds
d)
Molecules
2.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
3.
How many carbon atoms are there in a methane molecule? 
a)
0
b)
1
c)
4
d)
5
4.

How many hydrogen atoms are there in a water molecule? H20

a)

0

b)

1

c)

2

d)

3

5.

This is anything that has mass and takes up space (meaning it has a volume).

a)

matter

b)

mass

c)

element

d)

energy

6.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
7.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
8.

Is NO2 an element or a molecule?

a)

element

b)

molecule

9.
How many atoms/elements are in CaCO3?
a)
3
b)
4
c)
5
d)
6
10.
How many atoms/elements are in NO2?
a)
1
b)
2
c)
3
d)
4
11.

Is K an element or a molecule?

a)

element

b)

molecule

12.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
13.
Substance made of two or more different elements that chemically combine. 
a)
Atom
b)
Element
c)
Compound
d)
Proton
14.

How many sodium atoms are there in NaCl2?

a)

1

b)

2

c)

3

d)

4

15.

How are elements different from atoms?

a)

Elements are made out of atoms

b)

Atoms are made out of elements

c)

Elements are made out of molecules

d)

Molecules are made out of atoms.

16.

True or False. Elements are basic forms of matter that cannot be broken down into a simpler substance

a)

True

b)

False

17.

What has a negative charge?

a)

Protons

b)

Neutrons

c)

Electrons

18.

What has no charge?

a)

Protons

b)

Neutrons

c)

Electrons

19.
What are the states of matter?
a)
Solid, Liquid, Water
b)
Solid, Liquid, Gas
c)
Melting, Freezing, Condensing, Evaporating
d)
Water and Liquid
20.

define atomicity

a)

number of molecules present in an element

b)

number of atoms present in a compound

c)

number of atoms present in a element

d)

number of molecules present in a compound

21.

the (a)   elements have same chemical formula as their chemical symbol

22.

 o2o^2  is an example of 

a)

monoatomic element

b)

diatomic element 

c)

compound

d)

element

23.

the valency of Helium is :

a)

0

b)

1

c)

2

d)

8

24.

the formula of zinc oxide is ZnO, and the valency of oxygen is 2, what will be the valency of Zinc

a)

1

b)

2

c)

0

d)

3

25.

Cu is a symbol of

a)

cup

b)

cuprous

c)

copper

d)

curpton

26.

how will you represent two molecules of water

a)

H4O2H_4O_2

b)

2H2O2H_2O

c)

H2O x 3H_2O\ x\ 3

27.
What is the basic unit of matter and is the smallest particle of an element?
a)
Atoms
b)
Elements
c)
Compounds
d)
Molecules
28.

What is the smallest particle of an element; made of electrons, protons, and neutrons?

a)

orbital

b)

atom

c)

element

d)

periodic table

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