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Moc quiz- 9 ASP

Total questions: 87

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

2.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

3.
A combination that can be separated by physical processes is a .....
a)
Pure Substance
b)
Glucose
c)
Element
d)
Mixture
4.
Which one of these pictures represents a pure substance? 
a)
1 and 2
b)
1 and 3
c)
2 and 3
d)
1, 2 and 3
5.

which of the following statement is not correct ?

1. atoms are neutral

2. atoms are basic units of matter

3. atoms aggregate to form large molecules

4.atoms exist indepedently

a)

1

b)

3

c)

2

d)

4

6.

What pairs are example on diamtomic elements

a)

H2 and Cl2

b)

H2 and Fe

c)

CO and Fe

d)

H2 and CO

7.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
8.

This type of solid forms a regular repeating

three-dimensional structure called a crystal lattice. What type of solid is this?

a)

amorphous

b)

crystalline

c)

glass

d)

diamond

9.

Which is true about amorphous solids?

I: They have fixed melting points

II: They show a high range of order

III: Rubber and glass are examples on amorphous solids

a)

I only

b)

II only

c)

II only

d)

i, II and III

10.

Which of the following is true of solids?

a)

Solids maintain a defined shape and size under all conditions.

b)

All solids have a crystalline structure.

c)

All solids maintain a defined shape and size if conditions remain constant.

d)

All solids have a lattice structure at the atomic level.

11.

One major difference between crystalline and amorphous solids is that

a)

crystalline solids have a precise melting point.

b)

amorphous solids have a lattice structure.

c)

amorphous solids always behave consistently and uniformly.

d)

crystalline solids break unpredictably and can produce curved fragments.

12.

What is a pure substance that cannot be broken down into simpler substances by physical or chemical means?

a)

Compound

b)

Molecule

c)

Element

d)

Atom

13.

An iron nail rusting is what kind of property?

a)

Physical

b)

Chemical

14.

Identifying the texture of the iron nail is what kind of property?

a)

Physical

b)

Chemical

15.

Which of the changes below is considered to be a chemical change?

a)

Baking soda and vinegar combine to make carbon dioxide

b)

Water boils in a cattle

c)

The iron nail turns reddish brown when placed in a cup of water

d)

A yellow insoluble solid is formed when silver nitrate is mixed with potassium iodide

16.

Which are clues that a chemical change has taken place?

a)

Change in temperature

b)

The color changes

c)

The odor or smell changes

d)

Formation of a precipatate

e)

You see bubbles form

17.
Which of these is an example of a new substance being formed?
a)
a nail rusting
b)
a wall being painted
c)
water changing to steam
d)
paper being folded
18.
Which example best describes a physical change?
a)
iron rusting
b)
charcoal burning
c)
an ice cube melting
d)
a marshmallow burning
19.

Which of the following are examples of a Chemical Change?

a)

Iron Rusting

b)

Gas Burning

c)

Breaking a glass

d)

Boiling water

e)

Burning Wood

20.
Which is an example of a physical property?
a)
ability to react with acid
b)
 state of matter
c)
flammability
d)
ability to react with oxygen
21.
What is the volume of Object X?
a)
10.0 cm3
b)
15.0 cm3
c)
20.0 cm3
d)
25.0 cm3
22.

this equipment name is . . . .

a)

volumetric flasks

b)

volumetric pipettes

c)

graduated pipettes

d)

graduated cylinders

23.

Which laboratory equipment is useful for prepare accurate solutions?

a)

Beaker

b)

Volumetric flask

c)

Graduated cylinder

d)

All of them

24.

...... is useful as a reaction container or to hold liquid and solid samples.

a)

Beaker

b)

Volumetric flask

c)

Graduated cylinder

d)

Erlenmayer

25.

Laboratory instrument used to precisely measure volumes/liquids?

a)

beaker

b)

graduated cylinder

c)

flask

d)

pipette

26.

Check all proper uses for this piece of equipment.

a)

Measuring precise and accurate volume amounts

b)

Heating Solutions

c)

Transferring Solutions

d)

Mixing Solutions

e)

Identifying Mass

27.

What laboratory apparatus are you going to transfer the hot beaker?

a)

test tube holder clamp

b)

tongs

c)

forceps

28.

Which of the following pieces of chemistry lab equipment is a container used for heating substances to very high temperatures?

a)

Crucible

b)

Bunsen burner

c)

Beaker

d)

Erlenmeyer Flask

e)

Funnel

29.

What is a mortar and pestle used for?

a)

Crushing and grinding solids into a powder

b)

Scooping up solids such as powder

c)

Cleaning out test tubes

d)

Supporting a beaker or flask when heating

30.

Which contains a solid? (Choose all)

a)

A

b)

B

c)

C

d)

D

31.

Which is a heterogeneous mixture? (Choose all)

a)

1

b)

2

c)

3

d)

4

32.
Examples are milk and gasoline.
a)
elements
b)
mixtures
c)
compounds
33.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound
34.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
35.

diagram "b" is an example of a(n)

a)

element

b)

compound

c)

mixture

36.

Which of the following is matched incorrectly.

a)

Milk: compound

b)

Steel alloy: homogeneous mixture

c)

Glucose (C6H12O6): compound

d)

Cookies & Cream: heterogenous mixture

37.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
38.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

39.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

40.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

41.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

42.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

43.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

44.

Solve the question shown by the figure

4 lines
45.

Solve the question shown by the figure

4 lines
46.

Which is the greatest temperature?

a)

273 K

b)

00C

c)

250c

d)

295 K

47.

Which separation technique is used to obtain pure water from seawater?

a)

Simple distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

48.

For paper chromatography to work,

a)

the dyes must have different boiling points.

b)

the dyes must have different solubilities in the solvent.

c)

the starting line on the chromatogram must be drawn using pen.

d)

The starting line must be below the level of the solvent.

49.

Which ink is most soluble?

a)

Blue

b)

Red

c)

Yellow

d)

Green

50.

Which ink is a mixture?

a)

Blue

b)

Red

c)

Yellow

d)

Black

51.

Referring to the chromatogram, black ink contains

a)

Blue, red and yellow ink only

b)

Blue, red, yellow and green ink

c)

Blue and yellow ink

d)

Black ink only

52.
In the distillation apparatus shown, what are the parts labelled A and B?
a)
A = funnel, B = thermometer
b)
A = thermometer, B = funnel
c)
A = condenser, B = flask
d)
A = condenser, B = thermometer
53.

A mixture contains chalk powder and salt. How do we separate this mixture?

a)

Filter the mixture.

b)

Dissolve it in water, then evaporation.

c)

Dissolve it in water, filtration, then evaporation.

d)

Dissolve it in water, evaporation, then filtration.

54.

In this filtration set-up, what is X (solid in the filter paper) and Y (liquid in the beaker)?

a)

X - residue, Y - distillate

b)

X - residue, Y - filtrate

c)

X - impurities, Y - distillate

d)

X - impurities, Y filtrate

55.

The diagram shows a chromatogram of the analysis of three ink samples, X, Y and Z. Which is true?

a)

Sample X contains ink sample Y.

b)

Samples X and Z are the same.

c)

Sample X contains ink sample Z.

d)

Samples X, Y and Z are mixtures.

56.
What does this symbol indicate?
a)
Corrosive substances are present; protect your hands.
b)
Wash your hands.
c)
Extreme temperatures are present; wear appropriate gloves.
d)
Bacteria are present.
57.
What does this symbol indicate? 
a)
Fumes are present; ventilation required.
b)
Fumes are present; inhale deeply.
c)
Moisture is condensing; use a test tube to collect. 
d)
Spill safety.
58.

What symbol is this?

a)

Toxic

b)

Flammable

c)

Chemical

d)

Disposal

59.

What does this symbol mean?

a)

Flammable

b)

Explosives

c)

Oxidising Agent

d)

Corrosive

60.

What does this symbol mean?

a)

Flammable

b)

Oxidising Substance

c)

Gases Under Pressure

d)

Explosive

61.

What does this symbol mean?

a)

Flammable

b)

Explosive

c)

Oxidising Agent

d)

Corrosive

62.

Order the units in the correct increasing order:

picometer, kilometer, megameter, micrometer and nanometer

4 lines
63.

Choose the correct answer

a)

A

b)

B

c)

C

d)

D

64.

Looking at the following mass spectrum of neon, how many isotopes does neon have?

a)

1

b)

2

c)

3

d)

4

65.

Looking at the following mass spectrum of neon, which isotope is most abundant?

a)

Ne-20

b)

Ne-21

c)

Ne-22

66.

Looking at the following mass spectrum diagram, what would be the average atomic mass of this element? Round to 3 sig figs (only type a #, no units)

(a)  

67.

Nitrogen has two isotopes. One isotope has a mass of 14.003 amu and a relative abundance of 99.63%, while the other has a mass of 15.000 amu and a relative abundance of 0.37%. What is the average atomic mass for nitrogen?

a)

14.993 amu

b)

14.456 amu

c)

14.778 amu

d)

14.007 amu

68.

Calculate the average atomic mass of the following element:

25Y (11%), 32Y (39%), 29Y (22%), 30Y (28%)

a)

32.0

b)

30.0

c)

29.0

69.

Which is true about the following atom: 6 protons, 5 neutrons, and 8 electrons

a)

-2 charged ion

b)

+2 charged ion

c)

Isotope of Carbon

d)

Isotope of Boron

70.
How many electrons does S2- have?
a)
16
b)
18
c)
14
d)
12
71.
How many electrons does Cu4+ have?
a)
29
b)
33
c)
25
d)
30
72.

which explanation of this notation is correct?

a)

12 is proton #

b)

6 tells you there are 6 neutrons

c)

6 tells you there are 6 protons

d)

12 is not a mass # here

73.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
74.
Cations (like Ca2+)gain a positive charge by ____ electrons accoring to the octet rule.
a)
gaining
b)
losing
75.
Anions (like Cl-) gain a negative charge by ____ electrons according to the octet rule.
a)
gaining
b)
losing
76.

A potassium atom has 19 p+, 19 e- and 20 no. Its mass number is:

a)

38

b)

39

c)

40

d)

58

77.

The isotope Ba-140 has:

a)

140 neutrons

b)

81 neutrons

c)

137 neutrons

d)

84 neutrons

78.

An ion of bromine has a charge of -1. It would have:

a)

79 electrons

b)

80 electrons

c)

36 electrons

d)

34 electrons

79.
The total number of molecules in 34.0 grams of NH3 is equal to 
a)
1.00 x 22.4
b)
2.00 x 22.4
c)
1.00 (6.02 x 1023)
d)
2.00 (6.02 x 1023)
80.
What is the mass of one mole of (NH4)2CO3?
a)
144g
b)
138g
c)
96g
d)
74g
81.
How many grams are in 4.5 moles of sodium fluoride, NaF?
a)
0.1 g
b)
9.3 g
c)
100 g
d)
189 g
82.
How many moles are in 68 grams of copper (II) hydroxide, Cu(OH)2?
a)
1.4 moles
b)
0.7 moles
c)
6,630 moles
d)
50 moles
83.

A baker needs 6 g of baking soda for a recipe. The chemical formula for baking soda is NaHCO3. How many moles of baking soda is needed?

a)

0.071 mol

b)

0.167 mol

c)

0.273 mol

d)

0.214 mol

84.
Which of the following would have the highest number of moles?
a)
4g CO2
b)
15g H2O
c)
22g NaCl
d)
100g AgCl
85.

Choose the correct description of J. J. Thomson's Model of an Atom.

a)

The model is a indivisible and indestructible sphere

b)

The model is a sphere in which negatively charged particles - electrons- immersed in a positively charged space of the sphere.

c)

The model is a sphere in which negatively charged particles - electrons- move around the center of an atom creating an electron cloud

d)

The model is a sphere in which negatively charged particles - electrons - move around the nucleus of an atom in a defined passes, called orbits, like planets around the sun

86.

What results did Rutherford observe in his Gold-Foil experiment?

a)

He observed that all alpha particles did go through a gold-foil in straight lines

b)

He observed that most alpha particles did not go through a gold-foil and stopped on one side of the gold foil.

c)

He observed that a small number of alpha particles bounced off the gold-foil at very large angles

d)

He observed that all alpha particles slightly deflected from the straight line when going through a gold-foil

87.

Choose one of the conclusions that Ernest Rutherford made about the mass of the atom, based on the experimental results of his Gold-Foil experiment

a)

He concluded that almost all mass of the atom is distributed evenly among subatomic particles

b)

He concluded that almost all mass of the atom is distributed among electrons

c)

He concluded that almost all mass of the atom is concentrated in a small region, in a center of an atom, that has a positive charge

d)

He concluded that almost all mass of the atom is concentrated in a small region, in a center of an atom, that has a negative charge

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