Question 1

What is a physical change?

Accepted Answer

A change in size and shape.

Answer

A change in size, shape and identity.

Answer

A change in size only.

Answer

A change in shape only.

Question 2

What is a chemical change?

Accepted Answer

A change in size, shape, and identity.

Answer

A change in shape

Answer

A change in size

Answer

A change in size and shape.

Question 3

What is chemistry?

Accepted Answer

The study of "mixing matter" and how matter can change identity.

Answer

The study of cheddar mist

Answer

The study of chemicals

Question 4

What is a chemical bond?

Accepted Answer

The force that holds atoms together in a compound. They are the source of energy when the bonds are broken and formed.

Answer

The force that keeps atoms separated in a compound. They are the source of energy when the bonds are reattached.

Answer

A hug between chemicals.

Answer

Attachments (like belts) that keep atoms in a group.

Question 5

What is a chemical Reaction?

Accepted Answer

A process during which chemical bonds between atoms are broken and new ones are formed. Producing one or more different substances.

Answer

The process by which one or more substances change to produce more of the same substances.

Answer

The process by which one substance changes to produce fewer substances.

Question 6

Exergonic reaction

Accepted Answer

Chemical reactions that release energy.

Answer

Chemical reactions that absorb energy.

Answer

Chemical reactions that have no energy.

Question 7

What is an exothermic reaction?

Accepted Answer

A chemical reaction that releases thermal energy (heat).

Answer

A chemical reaction that has no thermal energy (heat).

Answer

A chemical reaction that absorbs thermal energy (heat).

Question 8

What is an endothermic reaction?

Accepted Answer

A reaction that ABSORBS energy in the form of heat.

Answer

A reaction that has no energy in the form of heat.

Answer

A reaction that releases energy in the form of heat.

Question 9

What is a catalyst?

Accepted Answer

A substance that speeds up the rate of a chemical reaction.

Answer

A substance that slows down the rate of a chemical reaction.

Answer

A substance that stops a chemical reaction.

Question 10

Law of Conservation of Mass

Accepted Answer

Matter is not created nor destroyed in any chemical or physical change, but just converted into a different form of matter.

Answer

Matter must be conserved

Answer

Matter can be created and destroyed in any chemical or physical change.

Question 11

What is a reactant?

Accepted Answer

A chemical substance that is present at the start of a chemical reaction; a starting ingredient in a chemical reaction.

Answer

A chemical substance that is present at the start and end of a chemical reaction.

Answer

A chemical substance that is not present at the start of a chemical reaction.

Question 12

What is a product?

Accepted Answer

A chemical substance formed as a result of a chemical reaction; reactants produce products

Answer

A chemical substance that is an ingredient in a  chemical reaction.

Answer

A chemical substance not formed as a result of a chemical reaction, but from a physical change

Question 13

Who was Antoine Lavoisier?

Accepted Answer

He was 'father of modern chemistry', named oxygen and hydrogen, and created the Law of Conservation of Mass

Answer

Ms. McCourt's ex-boyfriend

Answer

A really cool German astronomer

Answer

Mr. Smith's father

Question 14

The mass of the candles and oxygen before burning is...

Accepted Answer

always equal to the mass of the remaining candle and gaseous products

Answer

always different from the mass of the remaining candle and gaseous products

Answer

always less than the mass of the remaining candle and gaseous products

Answer

always more than the mass of the remaining candle and gaseous products

Question 15

What is a subscript?

Accepted Answer

A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound

Answer

A substitute teacher's signature

Answer

Writing under the line

Answer

A number in a chemical formula that tells the number of  molecules in a compound

Question 16

What is a chemical formula?

Accepted Answer

A combination of chemical symbols and numbers to represent a substance

Answer

A prescription for chemicals from a doctor

Answer

A combination of words and numbers to represent a substance

Question 17

What is a chemical Symbol?

Accepted Answer

A one or two letter representation of an element

Answer

The mathematical formulas for the elements

Answer

The name of an element

Question 18

What is an element?

Accepted Answer

A pure substance with a unique set of properties

Answer

A really cool dance move Mr. Smith knows

Answer

A new song by Luis Fonsi

Answer

A mixed substance with a usual set of properties

Question 19

What is a compound?

Accepted Answer

2 or more elements chemically combined

Answer

one element physically combined with itself

Answer

British money

Question 20

How much does a little fluffy cloud weigh?

Accepted Answer

About 200,000 lbs

Answer

About 200,000,000,000 lbs

Answer

About 200,000,000 lbs

Answer

2 million tons

Question 21

How much does a storm cloud weigh?

Accepted Answer

About 100, 000,000 lbs

Answer

100 lbs.

Answer

3 million tons

Answer

About 100, 000 lbs

Question 22

How does a cloud stay afloat?

Accepted Answer

Warm air rises from the sun "baking" the earth's crust, forcing the water droplets to stay floating in cloud.

Answer

They can fly.

Answer

The molecule swim in the air

Question 23

How much does a hurricane cloud weigh?

Accepted Answer

100, 000,000,000 lbs. (350,000 blue whales)

Answer

3 million tons

Answer

10,000,000 lbs. (35 blue whales)

Answer

10 tons

Question 24

What is the importance of the 4:1 ratio with the magic black snakes?

Accepted Answer

You will always add four times as much sugar as you do baking soda.

Answer

You will always add four cups of sugar and four cups of baking soda.

Answer

You will always add four times as much baking soda as you do sugar.

Question 25

Robert Goddard

Accepted Answer

"Father of Rocketry"; 1st to launch a liquid fuel rocket (March, 1926)

Answer

"Father of Chemistry"; 1st to mix elements together (March, 1926)

Answer

"Father of Bombs"; 1st to create an atomic bomb (March, 1926)

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