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หลังเรียน 1

Total questions: 40

Worksheet time: 13mins

Name
Class
Date
1.

How many VALENCE ELECTRONS does Chlorine have?

a)

2

b)

7

c)

8

d)

10

e)

17

2.

How many valence electrons does Mg have? (use the PTable)

a)

1

b)

2

c)

3

d)

4

e)

5

3.

Ionic bonds typically form between

a)

A metal and a nonmetal

b)

Two nonmetals

c)

Two metals

d)

A metalloid and a metal

4.

Why do elements form chemical bonds?

a)

Because they're friendly

b)

To create a new element

c)

To become stable

d)

Because they all need to gain more electrons

5.

If you were to draw the lewis dot structure for Germanium (Ge), how many dots would you put around it?

a)

2

b)

4

c)

6

d)

8

6.

Cations _______ electrons, becoming _______ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

7.

Anions ____ electrons, becoming _____ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

8.

Nonmetals (like Cl) typically ____ electrons when they form ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

9.

Metals (like Na) typically _____ electrons in the formation of ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

10.
Nitrogen will ____ electrons when forming an ionic bond.
a)
gain 1
b)
lose 1
c)
gain 3
d)
lose 3
11.
Ionic bonds form between metals and ____.
a)
metalloids
b)
metals
c)
nonmetals
12.
FeCl3 is a(n) ________ compound.
a)
ionic
b)
covalent
13.

Ionic bonds happen because of the ____ of valence electrons.

a)

sharing

b)

transfer

c)

keeping

d)

covering

14.
What is the formula of Sodium oxide?
a)
Na2O
b)
NaO2
c)
Na2O2
d)
Na2O
15.

Oxygen is in group 6 of the periodic table, which ion would it form?

a)

O-

b)

O+

c)

O2-

d)

O2+

16.

Which of the below is an ionic compounds?

a)

Ni

b)

MgCl2

c)

H2O

d)

CH4

17.
This picture shows a...
a)
Ionic Bond
b)
Covalent Bond
c)
Both bonds
d)
Neither bond
18.
This picture shows a...
a)
Ionic Bond
b)
Covalent Bond
c)
Both bonds
d)
Neither bond
19.

Which structure represents the sodium chloride lattice?

a)

A

b)

B

c)

C

d)

D

20.

Mg (s) --> Mg (g)

a)

Ionisation

b)

Combustion

c)

Formation

d)

Atomisation

21.

The enthalpy change when 1 mole of 1+ ions is formed from 1 mole of gaseous atoms.

a)

Lattice breaking

b)

Atomisation

c)

Ionisation

d)

Formation

22.

Mg (g) --> Mg+ (g) + e-

a)

Ionisation

b)

Combustion

c)

Formation

d)

Hydration

23.

Na+ (g) + Cl- (g) --> Na+ (aq) + Cl- (aq)

a)

Formation

b)

Solution

c)

Combustion

d)

Hydration

24.

What enthalpy change does the number 4 represent?

a)

Formation

b)

1st ionisation energy (Na)

c)

1st electron affinity (Na)

d)

Atomisation (Na)

25.

Which equation represents the process that occurs when the standard enthalpy of atomisation of iodine is measured?

a)

½ I2(s) → I(g)

b)

I2(s) → 2I(g)

c)

½ I2(g) → I(g)

d)

I2(g) → 2I(g)

26.
Write the correct formula for an ionic compound formed from S2- and Rb1+.
a)
SRb2
b)
SRb
c)
Rb2S
d)
RbS2
27.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
28.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
29.
TiCl2
a)
Tin(I) Chloride
b)
Titanium (I) Chloride
c)
Titanium (II) Chloride
d)
Titanium (I) Chloride 
30.

จากสูตรเคมีของสารประกอบไอออนิก CuCO3 จงหาประจุของ Cu

a)

0

b)

+1

c)

+2

d)

+3

31.
What is it called if there are three-pairs of electrons being shared?
a)
Triple bond
b)
Bond length
c)
Tribond
d)
Chocolate Mousse
32.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
33.
Atoms of H only form _________ bonds.
a)
Double
b)
Single
c)
Multiple
d)
Triple
34.

The number of covalent bonds form in group 17

a)

One

b)

Two

c)

Three

35.

Which of the following is the correct LD Diagram for Hydrogen Cyanide, HCN?

a)

A

b)

B

c)

C

d)

D

36.

Which is the correct molecular structure for carbon dioxide CO2?

a)
b)
c)
d)
37.

H2O has how many lone pairs?

a)

0

b)

1

c)

2

d)

3

38.

What is the correct formula for this molecule?

a)

CH

b)

C1H4

c)

CH4

d)

C4H

39.
How many lone pairs are in this molecule's structure?
a)
6
b)
2
c)
0
d)
4
40.

How many protons and electrons does a carbon atom have?

a)

6 protons, 6 electrons

b)

6 protons, 4 electrons

c)

4 protons, 6 electrons

d)

Not enough information

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