Worksheetstopic 1: ATOM, MOLECULE and COMPOUND
Total questions: 20
Worksheet time: 7mins
Name
Class
Date
1.
Determine the number of protons and the number of neutrons for:
Mg-24
a)
protons : 12
neutrons : 12
b)
protons : 12
neutrons : 24
c)
protons : 12
neutrons : 36
d)
protons : 24
neutrons : 12
2.
There is only one of me. I am made up of protons, electrons, and neutrons. What am I?
a)
Atom
b)
Molecule
c)
Compound
d)
Element
3.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
4.
A pure substance that is made from one type of atom is a(n) ______________ .
a)
Mixture
b)
Atom
c)
Element
d)
Compound
5.
Classify Sulfur (S) as an element or compound.
a)
Element
b)
Compound
6.
TRUE OR FALSE:
There are millions of elements.
There are millions of elements.
a)
True
b)
False
7.
K20 - name?
a)
potassium dioxide
b)
potassium oxide
c)
potassium oxygen
d)
dipotassium dioxide
8.
What is the formula for copper(I) sulfate?
a)
Cu(SO3)
b)
Cu(SO4)
c)
Cu2(SO3)
d)
Cu2(SO4)
9.
Hydrogen nitrite (nitrous acid)
a)
H2NO3
b)
HNO3
c)
HNO2
d)
H2NO2
10.
Name this compound:
Ca(CO3)
Ca(CO3)
a)
Calcium carbon oxide
b)
Calcium (II) carbonate
c)
Calcium carbonate
d)
Carbonate (I) calcide
11.
The chemical formula of tetraphosphorus heptaoxide is
a)
F₄O₁₀
b)
P₄O7
c)
PO
d)
P₁₀O₄
12.
What is the formula for chloric acid?
a)
H3ClO3
b)
H3ClO4
c)
HClO3
d)
HClO4
13.
Binary acids start with "____________"
a)
acid
b)
nitric
c)
hydraulic
d)
hydro
14.
When naming oxyacids, change "-ite" to:
a)
-ate
b)
-ic
c)
-ous
d)
-ite
15.
H2SO3 (sulfite ion)
a)
sulfuric acid
b)
hydrosulfuric acid
c)
sulfurous acid
d)
persulfuric acid
16.
Which acids start with the prefix hydro- ?
a)
Binary
b)
Oxyacids
17.
What is the formula for perchloric acid?
a)
H3ClO3
b)
H3ClO4
c)
HClO3
d)
HClO4
18.
Hydroiodic acid
a)
H2I2
b)
H2I
c)
HI
19.
Is H2S an oxyacid or Binary acid?
a)
Oxyacid
b)
Binary Acid
20.
Select all of the oxyacids from the list below.
a)
H2CO3
b)
HCl
c)
HCN
d)
HNO3
100 %
