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Ions & Chemical formulae

Total questions: 50

Worksheet time: 37mins

Name
Class
Date
1.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
2.
Why are ions formed?
a)
To make our lives difficult
b)
Because atoms want 8 valence electrons
c)
Because atoms have the same number of protons and electrons
d)
Because atoms gained neutrons
3.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
4.
Which particles change the charge in atoms when ions are formed?
a)
Protons
b)
Electrons
c)
Neutrons
d)
Kittens
5.
What is the ionic symbol for a phosphorus atom?
a)
P-3
b)
P+3
c)
P-2
d)
P+2
6.

Ionic bonds form between two ions that have

a)

negative charges

b)

positive charges

c)

opposite charges

7.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
8.

This is called a __________ .

a)

Positive Ion

b)

Negative Ion

c)

Neutron

9.

This is called a ____________ .

a)

Neutron

b)

Electron

c)

Negative Ion

d)

Positive Ion

10.

The name for the ionic compound NaF is

a)

Sodium fluoride

b)

Nappium fluoride

c)

Sodium fluorine

d)

Fluorine sodiumide

11.

The chemical formula for CaS is

a)

Cerium sulfide

b)

Carbon sulfur

c)

Calcium sulfide

d)

Calcium sulfur

12.

The nitrate ion is

a)

N3-

b)

NO3-

c)

NO2-

d)

Ni-

13.

Which of these is NOT a polyatomic ion?

a)

OH-

b)

CO32-

c)

PO43-

d)

Cl-

e)

ClO4-

14.

The sulfate (SO42-) ion has

a)

2 atoms

b)

4 atoms

c)

5 atoms

d)

8 atoms

15.

The name for the ion O2- is

a)

Oxygen anion

b)

Oxide anion

c)

Oxygen

d)

Oxide cation

16.
Which is the correct formula for sodium chloride?
a)
SoCl
b)
SdCl
c)
NaCl
d)
NaCl2
17.
An example of a polyatomic ion is:
a)
O2-
b)
Na+
c)
CO32-
d)
Ag+
18.

Which of the following is nitrate?

a)

NO-

b)

NO2-

c)

NO3-

d)

NO4-

19.

Which of the following is ammonium?

a)

NH4+

b)

NO3-

c)

NO2-

d)

MnO4-

20.

Which of the following is carbonate?

a)

Cr2O4-2

b)

CH3COO-

c)

CO3-2

d)

CN-

21.

Which of the following is hydroxide?

a)

Cr2O4-2

b)

Cr2O4-2

c)

O3-2

d)

OH-

22.

Which of the following is phosphate?

a)

PO4-3

b)

O2-2

c)

OH-

d)

CO3-2

23.

Which of the following is sulfate?

a)

S2O3-2

b)

O2-2

c)

SO4-2

d)

SO3-2

24.

The name of Na2SO4 is

a)

sodium nitrate.

b)

sodium hydroxide.

c)

sodium sulfate.

d)

sodium phosphate.

25.
What's the name of the compound NH4NO3 ?
a)
nitrogen hydrogen oxygen
b)
ammonium nitrite
c)
nitrogenous water
d)
ammonium nitrate
26.
Ammonium and oxygen would combine to form:
a)
(NH4)2O
b)
NH4O2
c)
(NH4)O2
d)
NH6O3
27.
What is iron's charge in the chemical formula FeCl3?
a)
1+
b)
2+
c)
3+
d)
1-
28.
What would be the proper chemical formula for combining Al3+ and l- :
a)
Al l3
b)
Al3l
c)
Al l
d)
Al3 l3
29.
What formula results when Ca+2  and  Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
30.
Na +  and  S -2
a)
Na2S
b)
NaS2
c)
Na2S2
d)
NaS
31.
K +  and  N-3
a)
KN
b)
KN3
c)
K3N3
d)
K3N
32.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
33.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
34.
What charge does a calcium (Ca) ion have?
a)
+1
b)
+2
c)
+3
d)
+4
35.
What would be the proper chemical formula for combining Al3+ and l- :
a)
Al l3
b)
Al3l
c)
Al l
d)
Al3 l3
36.

What is the formula of an ionic compound formed from Lithium and Oxygen?

a)

Li2O

b)

LiO2

c)

2LiO

d)

Li2O

37.

What is the chemical formula of Magnesium chloride?

a)

MgCl

b)

MgCl2

c)

MgC

d)

MgC2

38.

What is the chemical formula of sodium sulfate?

a)

SSO4

b)

SoSO4

c)

NaSO4

d)

Na2SO4

39.

What is the name of this chemical, H2SO4?

a)

Hydrogen sulfate

b)

Sulfuric acid

c)

Sulfate

d)

Sulfate hydrogen

40.

What is the formula of Copper (II) oxide?

a)

CUO

b)

CuO

c)

CuO2

d)

Cu2O

41.

What is the formula of nitric acid?

a)

H2SO4

b)

HNO3

c)

HCl

d)

hno3

42.

Which of the following compound is not an acid?

a)

HCl

b)

H2SO4

c)

HNO3

d)

CH4

43.

What is the name of ion that is present in all acids?

a)

hydrogen ion

b)

hydroxide ion

c)

nitrate ion

d)

sulfate ion

44.

How many atoms are there in the compound MgCO3?

a)

3

b)

4

c)

5

d)

6

45.

The formula of iron(III) oxide is

a)

FeO

b)

FeO2

c)

Fe2O

d)

Fe2O3

46.

The formula of calcium hydroxide is

a)

CaOH

b)

Ca(OH)2

c)

Ca(OH)3

47.

The formula of sodium carbonate is

a)

NaCO3

b)

Na(CO3)2

c)

Na2CO3

48.

The name of KHCO3 is

a)

potassium carbonate

b)

potassium hydrogencarbonate

49.

The formula of iron(II) hydroxide is

a)

FeOH2

b)

FeOH

c)

Fe(OH)2

d)

Fe(OH)3

50.

The formula of ammonium ion is

a)

NH3

b)

NH3+

c)

NH4

d)

NH4+

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