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8th Grade 1st Semester Science Smackdown

Total questions: 110

Worksheet time: 30mins

Name
Class
Date
1.
When mixing chemicals students should always wear
a)
hair bows
b)
flip flops
c)
goggles
2.
Which tool protects clothing?
a)
goggles
b)
eye wash
c)
apron
d)
gloves
3.
You should never ______ chemicals in the lab. 
a)
taste
b)
touch
c)
smell
d)
all are correct
e)
none are correct
4.
What does this symbol tell you to do?
a)
Inhale deeply to make sure that you are mixing chemcials correctly.
b)
Tie back loose hair and clothing when working with stinky chemicals.
c)
Make sure to use proper chemicals to start your fires.
d)
Don't inhale vapors, and work in a well ventilated area. Use a "wafting" motion to test odors.
5.
What does this symbol tell you to do?
a)

Use a clamp or tongs to pick up hot glassware, don't use bare hands.

b)

Tie back loose hair and clothing when working with stinky chemicals.

c)

Make sure to use proper chemicals to start your fires.

d)

Know how to handle plants you are working with.

6.
Identify this lab tool.
a)
thermometer
b)
graduated cylinder
c)
beaker
d)
meter stick
e)
triple beam balance
7.
Identify this lab tool.
a)
thermometer
b)
graduated cylinder
c)
beaker
d)
meter stick
e)
triple beam balance
8.
Identify this lab tool.
a)
thermometer
b)
graduated cylinder
c)
beaker
d)
meter stick
e)
triple beam balance
9.
Identify this lab tool.
a)
thermometer
b)
graduated cylinder
c)
beaker
d)
meter stick
e)
triple beam balance
10.
What is the metric unit used to measure temperature?
a)
Fahrenheit
b)
Celsius
c)
Kelvin
d)
Rankine
11.
What is the freezing point of water in the metric scale
a)
0 ℉
b)
0 ℃
c)
100 °K
d)
532 °R
12.
The distance from one point to another.
a)
length
b)
mass
c)
volume
13.
The amount of matter (stuff) that an object is made up of.
a)
length
b)
mass
c)
volume
14.
The amout of space an object takes up.
a)
length
b)
mass
c)
volume
15.
What is the initials for millimeter?
a)
mm
b)
mim
c)
mms
16.
What is the initials for decagram?
a)
dg
b)
dag
c)
dgm
d)
dagm
17.
What would happen if you were launched into outer space?
a)
Your mass would change.
b)
Your weight would change.
c)
Both your mass and weight stay the same.
d)
Both your mass and weight will change.
18.
What is the measurement of the pencil in cm?
a)
2.6
b)
11
c)
2.2
d)
3
19.
What is the measurement of the pencil in mm?
a)
26
b)
11
c)
22
d)
30
20.
What is the mass of the container and sand together?
a)
100g
b)
70g
c)
7.7g
d)
177.7g
21.

How much liquid in the measuring tool in this picture?

a)
20 mL
b)
21.5 mL
c)

25.5 mL

d)
23 mL
22.

What is the area of the rectangle?

a)

8

b)

5

c)

13

d)

40

23.

What is the volume of the shape?

a)

40

b)

17

c)

120

d)

30

24.

What is the volume of the toy diver?

a)

2 mL

b)

1.6 mL

c)

3 mL

d)

5 mL

25.

What is the formula for density?

a)

density=volume/mass

b)

density=mass/volume

c)

volume=density/mass

d)

mass=volume/density

26.

Will a block of wood, with a density of .76 g/mL sink or float in water?

a)

sink

b)

float

c)

it will sink just under the water's surface

27.

A process for scientific inquiry that is a way to solve problems.

a)

data

b)

bias

c)

procedure

d)

scientific method

28.

An organized procedure to study something under controlled conditions.

a)

meniscus

b)

evidence

c)

experiment

d)

constants

29.

A testable prediction you make before starting an experiment (written in if...then...because format)

a)

observation

b)

problem

c)

experiment

d)

hypothesis

30.

Any factor that can change in an experiment

a)

observation

b)

variable

c)

experiment

d)

hypothesis

31.

The "d"ata of the experiment, It is the effect you see, and the part you measure.

a)

increment

b)

independent variable

c)

dependent variable

d)

variable

32.

The part of the experiment that "I" change on purpose. It is the cause of the change.

a)

incorement

b)

independent variable

c)

dependent variable

d)

variable

33.

Things you keep the same for every trial of your experiment

a)

meniscus

b)

evidence

c)

constants

d)

experiments

34.

Which is the best example of how to write a hypothesis? (remember the THREE key words)

a)

If ants are in the light then they see better.

b)

Ants will dig longer tunnels in the light because they see better.

c)

If I expose ants to light, then they will dig longer tunnels because they need filtered daylight to survive.

d)

If I expose ants to light, then they will dig longer tunnels.

35.

A skill that involves the use of one or more of the senses

a)

observation

b)

problem

c)

experiment

d)

hypothesis

36.

The curved line formed at the top of a column of liquid in a graduated cylinder

a)

evidence

b)

meniscus

c)

experiment

d)

constants

37.

Recorded observations or measurements.

a)

data

b)

bias

c)

procedure

d)

scientific method

38.

Data that you observe during an experiment, but cant measure(ex: smells, textures, etc.)

a)

quantitative data

b)

qualitative data

c)

procedure

d)

scientific method

39.

Data that you measure during an experiment It has a numerical value.

a)

quantitative data

b)

qualitative data

c)

procedure

d)

scientific method

40.

An organized chart that holds quantitative data.

a)

graph

b)

data table

c)

procedure

d)

conclusion

41.

A picture of your data, independent variable on the x-axis; dependent variable on y-axis

a)

hypothesis

b)

procedure

c)

data table

d)

graph

42.

A false assumption.

a)

data

b)

bias

c)

procedure

d)

scientific method

43.

A graph that shows a relationship between independent variables

a)

line graph

b)

bar graph

c)

pie graph

44.

A graph that shows a change over a period of time.

a)

line graph

b)

bar graph

c)

pie graph

45.

What is the symbol for calcium?

a)

C

b)

Ca

c)

Cm

d)

Cl

46.

What is the symbol for radon?

a)

R

b)

Ra

c)

Rd

d)

Rn

47.

What is the symbol for mercury?

a)

Hg

b)

My

c)

Me

d)

M

48.

How many protons are in this element?

a)

82

b)

207

c)

32

d)

4

49.

How many neutrons are in this element?

a)

82

b)

207

c)

32

d)

125

50.

How many electrons are in this element?

a)

82

b)

207

c)

32

d)

125

51.

How many types of atoms does each element contain?

a)

1

b)

2

c)

8

d)

18

52.

What type of charge does a proton have?

a)

positive

b)

negative

c)

neutral (no charge)

d)

all charges

53.

What type of charge does a neutron have?

a)

positive

b)

negative

c)

neutral (no charge)

d)

all charges

54.

What type of charge does a electron have?

a)

positive

b)

negative

c)

neutral (no charge)

d)

all charges

55.

Where would you find electrons?

a)

A

b)

B

c)

C

56.

Where would you find protons?

a)

A

b)

B

c)

C

57.

Where would you find neutrons?

a)

A

b)

B

c)

C

58.

What information is shown by letter A?

a)

atomic number

b)

element symbol

c)

element name

d)

atomic mass

59.

What information is shown by letter D?

a)

atomic number

b)

element symbol

c)

element name

d)

atomic mass

60.

How many total atoms are in the compound in the picture?

a)

3

b)

4

c)

5

d)

6

61.

Which element has TWO atoms in the compound?

a)

fluorine

b)

egyptium

c)

iron

d)

oxygen

62.

How much hydrogen is in ONE molecule of hydrogen sulfate?

a)

2

b)

4

c)

8

d)

16

63.

How much sulfur is in ONE molecule of hydrogen sulfate?

a)

0

b)

4

c)

8

d)

1

64.

A form of matter that has a definite shape and volume.

a)

solid

b)

liquid

c)

gas

d)

plasma

65.

Molecules in this state have more energy and bounce around randomly.

a)

solid

b)

liquid

c)

gas

d)

plasma

66.

Molecules in this state have particles that vibrate tightly

a)

solid

b)

liquid

c)

gas

d)

plasma

67.

This is considered the 4th state of matter, and doesn't exist much on our planet because of its high temperature.

a)

solid

b)

liquid

c)

gas

d)

plasma

68.

A solid that is made up of crystals in which particles are arranged in a regular, repeating pattern.

a)

crystalline solid

b)

liquid

c)

amorphous solid

d)

plasma

69.

A solid that does not have a distinct melting point, and does not have crystals in a pattern.

a)

crystalline solid

b)

liquid

c)

amorphous solid

d)

plasma

70.

A state of matter that has no definite shape, but has a definite volume.

a)

crystalline solid

b)

liquid

c)

gas

d)

plasma

71.

A liquid's resistance to flowing.

a)

oobleck

b)

fluid

c)

liquid

d)

viscosity

72.

A state of matter found on earth with no definite shape or volume.

a)

crystalline solid

b)

liquid

c)

gas

d)

plasma

73.

The measure of the average energy of motion of particles in a substance.

a)

volume

b)

pressure

c)

temperature

d)

viscosity

74.

The measure of the outward push on the walls of a container.

a)

volume

b)

pressure

c)

temperature

d)

viscosity

75.

Which law states the following....when pressure increases, volume decreases. (inverse relationship)

a)

Gay-Lussac's Law

b)

Boyle's Law

c)

Charles' Law

d)

Law of Thermodynamics

76.

Which temperature scale does water freeze at 0 degrees?

a)

Fahrenheit

b)

Kelvin

c)

Celsius

77.

Which scale is based upon the concept of absolute zero?

a)

Fahrenheit

b)

Kelvin

c)

Celsius

78.

A form of potential energy that is stored in chemical bonds between atoms.

a)

melting

b)

chemical energy

c)

thermal energy

d)

freezing

79.

The change in state from a solid to a liquid

a)

evaporation

b)

freezing

c)

vaporization

d)

melting

80.

The change of state from a liquid to a gas

a)

evaporation

b)

freezing

c)

vaporization

d)

melting

81.

The graph below shows thermal energy increasing, and three states of matter with phase changes. Which state/phase is represented by A?

a)

solid

b)

liquid

c)

gas

d)

melting

e)

vaporization

82.

The graph below shows thermal energy increasing, and three states of matter with phase changes. Which state/phase is represented by C?

a)

solid

b)

liquid

c)

gas

d)

melting

e)

vaporization

83.

The graph below shows thermal energy increasing, and three states of matter with phase changes. Which state/phase is represented by D?

a)

solid

b)

liquid

c)

gas

d)

melting

e)

vaporization

84.

What type of change is a change in shape?

a)

physical

b)

chemical

85.

What type of change happens when a car rusts?

a)

physical

b)

chemical

86.

According to Boyle's Law, what has to DECREASE in the picture to increase the pressure?

a)

temperature

b)

mass

c)

pressure

d)

volume

87.

What kind of relationships do circle graphs show?

a)

Part to Whole

b)

Whole to Whole

c)

Two Separate Sets of Data

88.

The Independent Variable is represented on which Axis?

a)

A

b)

X

c)

B

d)

Y

89.

What do we put at the top of a graph?

a)

X axis

b)

data table

c)

title

d)

nothing

90.

What is the name of the vertical (up and down) axis of the graph?

a)

X axis

b)

Y axis

91.
What is the name of the horizontal (side to side) axis of the graph? 
a)
X axis
b)
Y axis
92.
What is the independent variable in an experiment?
a)
the thing we change or test
b)
the normal situation
c)
what we measure in the end
d)
the thing we keep the same
93.
What is the dependent variable in an experiment? 
a)
the thing we change or test
b)
the thing we keep the same
c)
the thing we measure in the end
d)
the normal situation
94.
A graph is...
a)
An analysis of an observation.
b)
A visual representation of data.
c)
short for graphite.
d)
used to conduct an experiment.
95.
There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?
a)
quantitative
b)
qualitative
96.
There are two types of data. Which type of data involves descriptions that cannot be counted or measured?
a)
qualitative
b)
quantitative
97.
A line graph chart allows you to easily see
a)
information about the parts related to the whole.
b)
the total number of each category.
c)
how much data occurs within a range of numbers.
d)
Changes or trends over time.
98.
A bar graph  allows you to easily see
a)
information about the parts related to the whole.
b)
the total number of each category.
c)
comparisons at different times
d)
Changes or trends over time.
99.

The transfer of thermal energy between materials by the collisions of particles.

a)

conduction

b)

convection

c)

radiation

d)

shockwaves

100.

The transfer of thermal energy from one material to another by electromagnetic waves.

a)

conduction

b)

convection

c)

radiation

d)

shockwaves

101.

The transfer of thermal energy by the movement of particles from one part of a material to another.

a)

conduction

b)

convection

c)

radiation

d)

shockwaves

102.

When the temperatures of materials that are in contact are the same, and no heat energy transfers.

a)

source object

b)

receiver object

c)

thermal equilibrium

d)

electromagnetic radiation

103.

How readily a substance combines chemically with other substances

a)
Stability
b)
Inertness
c)
Solubility
d)
Reactivity
104.

The ability of one substance to dissolve into another

a)

dissolve rate

b)
Concentration level
c)
Chemical reaction
d)
Solubility
105.

A number in a chemical formula that tells the number of atoms in a molecule

a)
exponent
b)
subscript
c)
coefficient
d)
molar mass
106.

A number in front of a chemical formula in an equation that indicates how many molecules are involved in a chemical reaction

a)
reactant
b)
catalyst
c)
coefficient
d)
product
107.

Matter is not created or destroyed in any chemical or physical change

a)
Law of energy transformation
b)
Law of conservation of mass
c)
Principle of mass fluctuation
d)
Theory of matter alteration
108.
What type of reaction is shown in the photo?
a)
Exothermic
b)
Isothermic
c)
Endothermic
d)
None of the  above
109.

____ reactions usually feel cold.

a)

endothermic

b)

exothermic

c)

isothermic

d)

terrothermic

110.

Elemental symbol for Helium?

a)

Hm

b)

Hl

c)

He

d)

H

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