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Chemistry assessment gr 11

Total questions: 40

Worksheet time: 47mins

Name
Class
Date
1.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
2.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
3.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
4.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
5.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
6.

What is the maximum number of electrons in the second energy level (second shell) ?

a)

18

b)

8

c)

32

d)

2

7.

Identify the element with the electron arrangement 2,8,2

a)

Neon

b)

Sodium

c)

Magnesium

d)

Aluminium

8.

Identify the element with the electron arrangement 2,8,8

a)

Neon

b)

Argon

c)

Helium

d)

Chlorine

9.
How many total electrons does element 15 have?
a)
5
b)
2
c)
8
d)
15
10.
Protons are:
a)
Positive
b)
Negative
c)
Neutral
d)
Exist outside the nucleus
11.
Which has a bitter taste?
a)
Base
b)
Acid
c)
flagella
d)
cila
12.
Turns litmus red
a)
Acids
b)
Bases
c)
All
13.

What pH is the strongest base?

a)

1

b)

7

c)

4

d)

14

14.

What colour does a base turn red litmus paper?

a)

Red

b)

Blue

15.
Which of the following is most likely to be basic:
a)
Lemon juice
b)
Vinegar
c)
Laundry detergent
d)
Coke
16.

Acid + Base makes what?

a)

Salt

b)

saltwater

c)

an explosion

d)

Water

17.

Which reaction is NOT a neutralisation reaction

a)

Metal + acid

b)

Acid + Base

c)

Acid + Metal Carbonate

18.

Neutralisation reactions must make which two products?

a)

carbonate

b)

salt

c)

pepper

d)

water

19.

Which one of these is a base?

a)

Metal Hydroxide?

b)

Metal Carbonate

c)

Metal Oxide

d)

Alkali Metals

20.

How did you know Hydrogen gas was evolved in your experiment

a)

It turned lime water cloudy

b)

It had a squeaky pop when offered a lit splint

c)

I smelled it

d)

I didn't get any hydrogen gas

21.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
22.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
23.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are bases

b)

Both of the solution are acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an acid.

24.
On the pH scale higher numbers indicate
a)
acids
b)
bases
25.

Water has a neutral because

a)

it has more H+ ions than OH-

b)

it has more OH- ions than H+

c)

it does not produce any ions

d)

it has an equal amount of H+ and OH- in solution

26.

Determine the oxidation number of manganese in MnO2

a)

-1

b)

+2

c)

-2

d)

+4

27.

Determine the oxidation number of manganese in MnCl2

a)

-1

b)

+2

c)

-2

d)

+4

28.

Determine the oxidation number of manganese in Mn2O3

a)

+3

b)

+2

c)

-3

d)

+1

29.

Determine the oxidation number of phosphorus in P4O10

a)

-2

b)

-4

c)

+4

d)

+5

30.

Determine the oxidation number of xenon in XeF82-

a)

+3

b)

+4

c)

+6

d)

-2

31.

A redox reaction is NOT:

a)

all reactions

b)

a combustion reaction

c)

a reduction-oxidation reaction

d)

a reaction in which electrons are transferred from one atom to another

32.

Combustion and single-replacement reactions are __________ redox reactions.

a)

always

b)

never

c)

sometimes

d)

mostly

33.

Defined as the loss of electrons.

a)

oxidation

b)

reduction

c)

redox

d)

OIL RIG

34.

Cl2 + 2e- --> 2Cl - is an example of:

a)

a chemical reaction

b)

redox

c)

oxidation

d)

reduction

35.

Substance that reduces another substance by losing electrons.

a)

reducing agent

b)

half-reaction

c)

electronegative atom

d)

oxidizing agent

36.

Metal A is more reactive than Metal B. The following displacement reaction takes place.


Metal A + Metal B in compound ---> Metal B + Metal A in compound.


True or False.

a)

True

b)

False

37.

A more reactive metal will displace a less reactive metal from a metal compound. Which metal is more reactive - copper or iron?

a)

copper

b)

iron

38.

Copper is less reactive than iron. What do you expect to happen when copper is placed inside a solution of iron(II) sulfate?

a)

No reaction takes place.

b)

A reaction takes place. And a colour change is observed.

39.
Acid + Metal --> ?
a)
Salt + Water
b)
Salt + Hydrogen
c)
Salt
d)
Hydrogen
40.

Iron + Hydrochloric acid --> ?

a)

iron(II) sulfate + water

b)

iron + hydrogen

c)

iron(II) chloride + hydrogen

d)

iron(II) chloride + water

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