Quiz about 6th Grade Science Semester Review

Question 1

When the metal magnesium (Mg) is burned in the presence of the nonmetal oxygen (O₂), a white light and an increase in temperature occurs to produce a white-powdery substance called magnesium oxide (MgO).

Which answer choice best describes the pure substance magnesium oxide (MgO) that was produced?

Accepted Answer

a compound

Answer

an element

Answer

a mixture

Answer

a solution

Question 2

Which model most likely represents the chemical structure classified as a pure substance that is an element?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 3

The data table shows the recorded observations of four different substances when combined with water.

Based on the recorded observations, which substances indicate evidence that a chemical change occurred?

Accepted Answer

Substances I and III

Answer

Substances I and II

Answer

Substances I , II, and III

Answer

Substances II and IV

Question 4

Which is NOT evidence of a chemical change?

Accepted Answer

broken pieces

Answer

Color change

Answer

temperature change

Answer

formation of precipitation

Question 5

Which answer choice best describes an example of a chemical change?

Accepted Answer

Exposed metal rusts.

Answer

A baseball hitting a roof.

Answer

The roof of the car denting.

Answer

Paint cracking and chipping.

Question 6

Matter is anything that takes up space

Accepted Answer

true

Answer

false

Question 7

A fruit salad is a homogeneous mixture

Accepted Answer

false

Answer

true

Question 8

When a rubber band stretched it has____ energy

Accepted Answer

potential

Answer

nucular

Answer

kinetic

Answer

chemical

Question 9

A green plant has _____ energy

Accepted Answer

Chemical

Answer

Nuclear

Answer

Thermal

Answer

Jeremiah

Question 10

another name for a homogeneous mixture is A______

Accepted Answer

solution

Answer

Micheal

Answer

math

Answer

red monkey

Question 11

Which of the following is not a compound?

Accepted Answer

Cl

Answer

HCl

Answer

NaCl

Answer

CO2

Question 12

Which of the following represents an element?

Accepted Answer

H2

Answer

H2O

Answer

NaCl

Answer

CaCO3

Question 13

Which mineral is HARDER than quartz?

Accepted Answer

Topaz, Corundum, and Diamond

Answer

Feldspar. Apatite, and Talc

Answer

Talc, Gypsum, Topaz

Answer

Diamond, Calcite, Fluorite

Question 14

Using this scale, which mineral can scratch a Drill bit?

Accepted Answer

Corundrum

Answer

Talc

Answer

Topaz

Answer

Quartz

Question 15

Which of these is a property of metals?

Accepted Answer

Malleable

Answer

Good Insulator

Answer

Dull

Answer

Very brittle

Question 16

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon?

Accepted Answer

Metalloid

Answer

Metal

Answer

Nonmetal

Answer

Compound

Question 17

Stored energy in water behind a dam falls and changes into mechanical energy that turns a turbine that turns coils in a generator that produces electrical energy.  What is this?

Accepted Answer

Hydroelectric Power Plant

Answer

Fossil Fuel Power Plant

Answer

Nonrenewable Power Plant

Answer

Nuclear Power Plant

Question 18

Oil, Natural Gas, Nuclear, Coal - What do these items have in common?

Accepted Answer

They are examples of nonrenewable energy resources.

Answer

They are examples of inexhaustible energy resources.

Answer

They are examples of renewable energy resources.

Answer

They are examples of energy resources that do not cause pollution.

Question 19

Which of the following energy resources is nonrenewable?

Accepted Answer

Fossil Fuel

Answer

Biomass

Answer

Geothermal

Answer

Hydropower

Question 20

Oil, natural gas, and coal are called ________resources because they are not easy to replace.

Accepted Answer

nonrenewable

Answer

fossil fuels

Answer

conservation

Answer

natural resources

Question 21

__________ is an energy resource that WILL NOT run out in the next several hundred years.

Accepted Answer

Renewable Energy Resource

Answer

Nonrenewable Energy Resource

Answer

Fossil Fuel

Answer

Forever Fuel

Question 22

At which point of the roller coaster is potential energy the greatest?

Accepted Answer

W

Answer

X

Answer

Y

Answer

Z

Question 23

When a pendulum swings, at which point is kinetic energy highest?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 24

I have the most potential energy if I am:

Accepted Answer

20 feet high

Answer

5 feet high

Answer

10 feet high

Answer

15 feet high

Question 25

Which is the best example that something has kinetic energy?

Accepted Answer

b. a tennis ball rolling across the court

Answer

a. a car parked on a steep hill

Answer

c. a picture hanging on the wall

Answer

d. a piece of coal before it's burned

Question 26

Which is an example of potential energy?

Accepted Answer

the pulled back string on an archers's bow

Answer

a roller coaster speeding down a hill

Answer

releasing the strings on a guitar

Answer

an electric current lighting a light bulb

Question 27

Explain what happens to the potential energy of a rock as it falls off the side of a cliff.

Accepted Answer

The potential energy decreases as the kinetic energy increases.

Answer

The kinetic energy decreases as the potential energy increases.

Answer

The kinetic energy decreases as the potential energy decreases.

Answer

The potential energy decreases as the kinetic energy decreases.

Question 28

Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?

Accepted Answer

The least amount of force was needed on the 40 cm inclined plane.

Answer

Less force was needed on the 20 cm plane

Answer

More force was needed on the 40 cm inclined plane.

Answer

The least amount of force was needed on the 30 cm inclined plane.

Question 29

The illustraction shows a wooden block being pulled up an inclined plane with a spring scale. What change in the experimental setup would require more force to pull the block up the inclined plane?

Accepted Answer

Increasing the height of the inclined plane.

Answer

Using a much longer inclined plane.

Answer

Pulling the wooden block more quickly.

Answer

Reducing the mass of the wooden block.

Question 30

The unit for force is _____.

Accepted Answer

B. Newtons

Answer

A. Neutrons

Answer

C. Grams

Answer

D. Meters

Question 31

What is the net force?

Accepted Answer

40 N

Answer

20 N

Answer

0 N

Answer

400 N

Question 32

A box rests motionless on the ground. One student is pushing the box to the right with a force of 2 Newtons. The other student is pushing to the left with a force of 5 Newtons. In which direction will the box move?

Accepted Answer

Left

Answer

Right

Answer

No movement

Question 33

Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?