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Midterm Review

Total questions: 68

Worksheet time: 2hrs 34mins

Name
Class
Date
1.

Read the graduated cylinder to the appropriate precision. Which answer is most appropriate?

a)

6.3 mL

b)

6 mL

c)

6.61mL

d)

6.31 mL

2.

What is the volume of the liquid in this graduated cylinder?

a)

19 mL

b)

35 mL

c)

24.0 mL

d)

26.0 mL

3.

How close a measurement is to the true value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

4.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
5.

Does this image show results that are accurate and/or precise?

a)

Accurate, but not precise

b)

Precise, but not accurate

c)

Both precise and accurate

d)

Neither precise nor accurate

6.

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

a)

15.79%

b)

18.75%

c)

2.25%

d)

18%

7.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
8.
A crayon has a mass of 10g and volume of 5 mL. What is the density?
a)
30 g/mL
b)
15 g/mL
c)
1 g/mL
d)
2 g/mL
9.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
10.
Which units of measurement are used for volume?
a)
grams
b)
centimeters
c)
grams/milliliter
d)
milliliter
11.
Why do ice cubes float in a  glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
12.

What is the volume?

a)

95

b)

25

c)

5

d)

11

13.
A mechanical pencil has the density of 3.000 g/cm3.  The volume of the pencil is 15.8 cubic centimeters.  What is the mass of the pencil?
a)
47.4 g
b)
50 g
c)
0.190  g
d)
5.27 g
14.

If a block of wood has a density of 0.6 g/cm3 and a mass of 120 g, what is its volume?

a)

200 cm3

b)

0.005 cm3

c)

200.0 mL3

d)

72 mL

15.

240 cm = ___________ m

a)

2400

b)

24

c)

2.4

d)

0.24

16.

648 g = ____ mg

a)

6,480

b)

64,800

c)

648,000

d)

64.8

17.

68 cm = ___________ mm

a)

0.68

b)

6.8

c)

68

d)

680

18.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
19.
How would you write 0.0005 in scientific notation?
a)
50 x 105
b)
5 x 104
c)
5 x 103
d)
.5 x 103
20.
Liquid has a definite ___________, but a variable _____________.
a)
shape, volume
b)
mass, area
c)
smell, taste
d)
volume, shape
21.
Which of the following states of matter has the most kinetic energy?
a)
solid
b)
liquid
c)
gas
22.
To make a solid become a liquid, you must increase its________________.
a)
mass
b)
density
c)
kinetic energy
d)
potential energy
23.
A substance that has a definite shape and volume.
a)
evaporation
b)
gas
c)
liquid
d)
solid
24.

What is the phase change of a solid to a liquid?

a)

freezing

b)

melting

c)

boiling

d)

condensation

25.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
26.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
27.
What line segment represents only the solid state?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
28.
What state(s) of matter are present at D-E?
a)
Solid-liquid
b)
Liquid
c)
Liquid-gas
d)
Gas-Solid
29.
Between which points is the temperature of the substance increasing?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
30.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
31.
a)

Element

b)

Compound

c)

Mixture

32.
a)

Element

b)

Compound

c)

Mixture

33.
a)

Element

b)

Compound

c)

Mixture

34.

What does this illustrate

a)

Elements

b)

Compunds

c)

Mixture of Elements and Compunds

d)

Mixture of Compounds

35.

Which of the following is matched incorrectly.

a)

Air: compound

b)

Steel alloy: homogeneous mixture

c)

Glucose (C6H12O6): compound

d)

Cookies & Cream: heterogenous mixture

36.

What type of matter has an non-uniform existence?

a)

pure substance

b)

homogeneous mixture

c)

heterogenous mixture

d)

All the above

37.

What is used to measure (but not precise), heat, and mix large amounts of liquids?

a)

beaker

b)

flask

c)

test tube

d)

graduated cylinder

38.

What equipment allows you to measure liquid's volume and measures in milliliters?

a)

test tube

b)

beaker

c)

flask

d)

graduated cylinder

39.

Which equipment heats liquids and some stir liquids?

a)

beaker

b)

graduated cylinder

c)

flask

d)

hot plate

40.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
41.
Example of a physical property
a)
magnetism
b)
reactivity with oxygen
c)
flammability
d)
non-reactive
42.
Properties that can be observed without changing the identity of the substance.
a)
Physical
b)
Chemical
43.
Example for physical property
a)
odor
b)
burns in air
c)
reacts with water to create hydrogen gas
d)
rust
44.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
45.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
46.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
47.
Rust on an iron bar is an example of chemical change.
a)
True 
b)
False
48.
In the reaction shown by the equation, 252 grams of FeCl2 and 70 grams of Cl2 are consumed.
2FeCl2+ Cl2--> 2FeCl3 
How many grams of FeCl3 are produced? 
a)
161 grams
b)
182 grams
c)
322 grams
d)
392 grams
49.

What particles determine the mass number?

a)

Protons and electrons

b)

Electrons and neutrons

c)

Protons and neutrons

d)

Protons, neutrons, and electrons

50.

What is the mass number of bromine?

a)

35

b)

45

c)

80

d)

79.904

51.

The atomic number is equal to _.

a)

the number of protons

b)

the number of neutrons only

c)

the total number of protons and neutrons

d)

the number of protons, neutrons, and electrons

52.

How many neutrons does this bromine atom have?

a)

35

b)

45

c)

80

d)

115

53.

How many electrons does this magnesium ion have?

a)

24

b)

12

c)

10

d)

14

54.

What changes when an atom becomes an ion?

a)

The number of electrons

b)

The number of protons

c)

The number of neutrons

d)

Both the number of neutrons and electrons

55.

What happened to this Magnesium atom to make it an ion?

a)

It LOST electrons

b)

It GAINED electrons

c)

It GAINED protons

d)

It LOST protons

56.

What is the charge on a lithium atom that loses 1 electron?

a)

+1

b)

0

c)

-1

d)

-2

57.

Atoms of the same element that have different mass than expected because they have a different number of neutrons.

a)

Neutral Atom

b)

Ion

c)

Isotope

d)

Cation

58.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
59.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
60.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
61.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
62.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
63.

What is incorrect about this orbital diagram?

a)

Both arrows in the 2p box should be pointing up.

b)

There is nothing incorrect with this diagram.

c)

There should only be 1 arrow in the first 2p box and one in the 2nd 2p box.

d)

All the arrows should be pointing up.

64.
The highest point on a wave
a)
trough
b)
amplitude
c)
crest
d)
wavelength
65.

Which has the greatest energy among the colors in a rainbow?

a)

green

b)

orange

c)

red

d)

violet

66.

The portion of the electromagnetic spectrum that humans can see is called:

a)

radio waves

b)

visible light

c)

gamma rays

d)

x-rays

67.

When wavelength increases...

a)

energy decreases

b)

energy increases

68.

Which type of electromagnetic energy carries the least energy?

a)

X-Rays

b)

Visible Light

c)

Ultraviolet

d)

Microwaves

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