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Physical Science Unit 1 Review

Total questions: 84

Worksheet time: 2hrs 34mins

Name
Class
Date
1.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
2.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
3.

___________ have a positive charge. ____________ have a negative charge. _____________ have no charge.

a)

electrons; protons; neutrons

b)

protons; neutrons; electrons

c)

neutrons; protons; electrons

d)

protons; electrons; neutrons

4.
What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?
a)
22
b)
11
c)
34
d)
23
5.

The vertical (up and down) columns in the Periodic Table are called ______________ which determine the number of valence electrons an element has.

a)

groups

b)

towers

c)

periods

d)

atomic numbers

6.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

7.

Why is the overall charge of an atom neutral (0)?

a)

They have the same number of protons and neutrons.

b)

They have the same number of protons and electrons.

c)

They have the same number of electrons and neutrons.

8.

The horizontal (side to side) rows in the Periodic Table are called ______________ which determine how many energy levels an element will have.

a)

groups

b)

families

c)

periods

d)

atomic numbers

9.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
10.
How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
a)
34
b)
36
c)
2
d)
40
11.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
12.

The innermost energy level has a maximum of how many electrons?

a)

1

b)

2

c)

6

d)

8

13.

How many electrons can go in the Second energy level?

a)

2

b)

8

c)

18

d)

32

14.
How many valence electrons?
a)
2
b)
3
c)
5
d)
10
15.

How many valence electrons?

a)

2

b)

3

c)

4

d)

5

16.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
17.

What are special columns with elements that have similar properties on the periodic table called?

a)

Groups

b)

Families

c)

Periods

18.

What is the atomic number of oxygen?

a)

8

b)

O

c)

Oxygen

d)

15.999

19.
Question Image

Match the following elements to their period.

a)

Oxygen (O)

1.

2

b)

Calcium (Ca)

2.

4

c)

Silver (Ag)

3.

5

d)

Francium (Fr)

4.

7

e)

Lead (Pb)

5.

6

20.

Where are electrons located in the atom?

a)

Nucleus

b)

Orbitals

c)

Empty Space

d)

Cell

21.

Where are neutrons located in the atom?

a)

Nucleus

b)

Orbitals

c)

Empty Space

d)

Cell

22.

Where are protons located in the atom?

a)

Nucleus

b)

Orbitals

c)

Empty Space

d)

Cell

23.

An atom with the same number of protons but a different number of neutrons

a)

Proton

b)

Neutron

c)

Electron

d)

Ion

e)

Isotope

24.

An atom becomes _________ when it gains electrons.

a)

Positive

b)

Negative

c)

Neutral

25.

An atom becomes _______ when it loses electrons.

a)

Positive

b)

Negative

c)

Neutral

26.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
27.

What is a substance that cannot be broken down into simpler substances.

a)

Pure Substance

b)

Element

c)

Atom

28.

What is the smallest particle of an element

a)

Atom

b)

Element

c)

Compound

29.

What is a substance that is made from two or more simpler substance and can be broken down into those simpler substances?

a)

Atom

b)

Element

c)

Compound

30.

What is a type of mixture that the parts of the mixture are noticeably different?

a)

Pure Substance

b)

Heterogeneous Mixture

c)

Homogeneous Mixture

31.

What is a type of mixture that the substances are so evenly distributed that it is difficult to distinguish one substance from another.

a)

Pure Substance

b)

Heterogeneous Mixture

c)

Homogeneous Mixture

32.

What is a mixture that forms when substances dissolve and form a homogeneous mixture?

a)

compound

b)

solution

c)

colloid

33.

What is a heterogeneous mixture that separates into layers over time?

a)

Suspension

b)

Colloid

c)

Solution

34.

At what temperature did bread mold the slowest?

a)

20

b)

40

c)

60

d)

80

35.

Nitrogen is important to the chemical industry. It is used to make fertilizers, dyes, nylon, and explosives. It also plays an important biological role as It is cycled naturally by living organisms through the nitrogen cycle.

Q: Which of the following elements would most likely have the same number of valence electrons as Nitrogen (N)?

a)

Carbon (C)

b)

Oxygen (O)

c)

Phosphorus (P)

d)

Helium (He)

36.

Which pair of elements would most likely have a similar arrangement of outer electrons and have similar chemical behaviors?

a)

boron and aluminum

b)

helium and fluorine

c)

carbon and nitrogen

d)

chlorine and oxygen

37.

All of the elements in group 2 of the periodic table are known as alkaline earth metals. These elements are all shiny and silvery-white. Models of these elements are shown.

What BEST explains their similar appearance?

a)

the number of protons in each of the elements

b)

the number of neutrons in each of the elements

c)

the number of electron shells in each of the elements

d)

the number of valence electrons in each of the elements

38.

Based on the Table, which of these elements probably has physical and chemical properties most similar to boron (B)?

a)

Magnesium (Mg)

b)

Aluminum (Al)

c)

Neon (Ne)

d)

Chlorine (Cl)

39.

The model shows the first three periods of the Periodic Table.

Q: Which statement BEST describes the trend in the number of protons and valence electrons across a period?

a)

Across a period, elements gain a proton and lose a valence electron.

b)

Across a period, elements gain a proton and gain a valence electron.

c)

Across a period, elements lose a proton and gain a valence electron.

d)

Across a period, elements lose a proton and lose a valence electron.

40.

Coompared with particles of matter in the solid phase, particles of matter in gaseous phase _______Choose two answers

a)

are less compressible

b)

have less kinetic energy

c)

have more kinetic energy

d)

are more compressible

41.

Label the phase change diagram: #4 only

a)

Freezing

b)

Melting

c)

Condensation

d)

Evaporation

e)

None

42.

The subatomic particle(s) responsible for giving an element its identity is the —

a)

Neutrons

b)

Electrons

c)

Protons

d)

Nucleus

43.

Select all the true statements about the atoms.

a)

Atoms are the smallest unit of an element.

b)

Electrons are the subatomic particles that surround the nucleus.

c)

Neutrons are the subatomic particles inside the nucleus of an atom.

d)

An atom is composed of a nucleus containing electrons and protons.

44.

When moving across a period or down a group, the atomic mass increases. This trend can be explained by the —

a)

protons increasing in mass as the atomic mass of the atom increases

b)

addition of electrons to the atomic nucleus

c)

addition of protons to the atomic nucleus

d)

electrons increasing in mass as the atomic mass of the atom increases

45.
Sanding a piece of wood is considered _____.
a)
 physical change
b)
chemical change
c)
physical property
d)
chemical property
46.
A piece of metal rusting is considered +______.
a)
physical change
b)
chemical change
c)
physical property
d)
chemical property
47.
Of the following variables, which is the one that is measured? 
a)
Independent Variety
b)
Dependent Variable 
c)
Controlled Variable 
d)
Independent Variable
48.

An object has a density of 1.4 g/cm3. It is slowly lowered into a graduated cylinder whose water level was 65 mL. When the object is completely submerged the water level rises to 90 mL. What is the mass of the object?

a)

25 g

b)

15 g

c)

35 g

d)

18 g

49.

When an object is immersed in a fluid, it pushes the fluid out of the way and takes its place. This is ...

a)

Gravity

b)

Buoyancy

c)

Density

d)

Displacement

50.
Archimedes' Principle states that... 
a)
The buoyant force acting on an object equals the volume of the fluid displaced by the object. 
b)
The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
c)
The buoyant force acting on an object will always be equal. 
51.
The upward force exerted by a liquid on an object immersed in or floating on the liquid
a)
pressure
b)
buoyant force
c)
normal force
d)
gravity
52.
The rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally throughout.
a)
pascal's principle
b)
bernoulli's principle
c)
archimedes' principle
d)
Newton's Law
53.
The rule that states that a stream of fast-moving fluid exerts less pressure than the surrounding fluid.
a)
pascal's principle
b)
bernoulli's principle
c)
archimedes' principle
d)
Newton's Law
54.
What is the equation for pressure?
a)
Pressure = Force / Surface area
b)
Pressure = Force x Surface area
c)
Pressure = Force + Surface area
d)
I have a 6 foot squirrel named Antney
55.
Which direction does buoyant force always push?
a)
downward
b)
upward
c)
all directions
d)
sponge bob
56.
Fluid pressure is directed
a)
in all directions.
b)
only upward.
c)
only downward.
d)
always sideways.
57.
Gasses exert pressure 
a)
randomly in varying directions.
b)
horizontally.
c)
evenly in all directions.
d)
vertically.
58.
What is the formula Charles' Law?
a)
V = T
b)
VT = VT
c)
T1 / V1 = T2 / V2
d)
V1 / T1 = V2 / T2
59.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
60.

(Charles Law) There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be?

a)

40 L

b)

70 L

c)

74.3 L

d)

75.9 L

61.
Tom Brady enjoys balloon animals from the carnival. He just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If Gronkowski plays a trick on Tom, and puts his balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 8.0°C?
(Don’t forget about what must be done to temperatures!)
a)
1.42 L
b)
6.85 x 104 L
c)
3.78 L
d)
1.15 L
62.

How many valence electrons are found in atoms of group 14?

a)

4

b)

3

c)

14

d)

16

63.
Which group has the greatest number of valence electrons?
a)
1
b)
14
c)
18
d)
16
64.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

65.

Which elements have the most similar chemical properties?

a)

boron and carbon

b)

oxygen and sulfur

c)

aluminum and bromine

d)

argon and silicon

66.

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

a)

1

b)

2

c)

8

d)

18

67.

When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

a)

The total number of neutrons in the unknown element

b)

The total number of particles in the nucleus of the unknown element

c)

The number of protons in the nucleus of the unknown element

d)

The number of valence electrons in the unknown element

68.

What group is the most reactive metals?

a)

2

b)

18

c)

1

d)

16

69.

What group is the most reactive non metals?

a)

1

b)

17

c)

2

d)

1

70.

Why are halogens so reactive?

a)

They want to get rid of their only valance electron

b)

They only need one more electron

c)

They are non reactive, they have a full shell

71.
a)
2
b)
8
c)
3
d)
13
72.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

73.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
74.

Appear Vertically on the periodic table

a)

Periods

b)

Groups

75.

Energy Levels best describe .....

a)

Periods

b)

Groups

76.

Elements that are similar in chemical reactivity

a)

Periods

b)

Groups

77.

Valence Electrons are organized into .......

a)

Periods

b)

Groups

78.

Families on the Periodic table are organized into .....

a)

Periods

b)

Groups

79.

A ___ change causes the substance to change to a new substance with different properties.

a)

Physical

b)

Chemical

80.

A ____ change only changes the look of the substance but NOT the chemical make-up.

a)

Physical

b)

Chemical

81.

Water + Kool-aid Powder.

Is it a physical or chemical change?

a)

Physical

b)

Chemical

82.

Choose all of the following that are PHYSICAL changes.

a)
b)
c)
d)
e)
83.

Choose all of the following that are CHEMICAL changes.

a)
b)
c)
d)
e)
84.

This change is a

a)

chemical reaction

b)

physical change

c)

musical change

d)

Ice Ice baby