Question 1

Which of the following does not describe an element?

Accepted Answer

can be broken down into other substances

Answer

pure substance

Answer

found on the Periodic Table

Answer

symbol starts with a capital letter

Question 2

Atmosphere...

Accepted Answer

NO!

Answer

MAYBE?

Answer

YES!

Answer

I DON'T KNOW.

Question 3

To solve for density, you divide...

Accepted Answer

mass by volume

Answer

length by width by height

Answer

density by weight

Answer

centimeters by milliliters

Question 4

Which of the following does NOT show evidence of a chemical change?

Accepted Answer

change in volume

Answer

unexpected temperature change

Answer

formation of a precipitate

Answer

unexpected color change

Question 5

CO is the symbol for an element.

Accepted Answer

False

Answer

True

Question 6

Characteristics of metals DO NOT include

Accepted Answer

brittle

Answer

malleable

Answer

shiny luster

Answer

high conductivity

Question 7

If 2 substances in a container have different densities, it's evidence of a chemical reaction.

Accepted Answer

False

Answer

True

Question 8

An object with a mass of 12g and a volume of 6 cubic cm has a density of...

Accepted Answer

2

Answer

18

Answer

6

Answer

72

Question 9

Which is not a physical property of matter?

Accepted Answer

reactivity with another element

Answer

malleability

Answer

conductivity

Answer

luster

Question 10

Carbon is an element, but carbon dioxide is a compound because...

Accepted Answer

it's made of 2 different elements

Answer

it's a gas at room temperature

Answer

it's used by plants

Answer

it's useful to human beings

Question 11

An advantage of using coal to generate electricity is that it is...

Accepted Answer

an inexpensive energy source

Answer

a renewable energy source

Answer

the least energy efficient fossil fuel

Answer

a non-polluting source of energy

Question 12

Which of the following is the most abundant in the Earth's crust?

Accepted Answer

Oxygen

Answer

Calcium

Answer

Iron

Answer

Potassium

Question 13

Compounds are different from elements because they are...

Accepted Answer

a combination of 2 or more elements

Answer

a pure substance, elements are not

Answer

not able to be broken down into different parts

Answer

made from the same type of atoms

Question 14

Which of the following characteristics is shared by all chemical reactions?

Accepted Answer

formation of a new substance

Answer

release heat energy

Answer

production of a precipitate

Answer

show a color change

Question 15

What is a major disadvantage of using nuclear power to generate electricity?

Accepted Answer

the by-product of nuclear power is radiation

Answer

no greenhouse gases are produced

Answer

the power plants are inexpensive to build

Answer

a small amount of power is produced

Question 16

All of the following are evidence of a chemical change EXCEPT...

Accepted Answer

change in state of matter

Answer

formation of a gas

Answer

color change

Answer

formation of a precipitate

Question 17

Conductivity is a physical property of matter that describes its ability to...

Accepted Answer

transfer thermal and electrical energy

Answer

reflect light from its lustrous surface

Answer

be hammered or rolled into thin sheets

Answer

exist in nature as a solid, liquid or gas

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