Chemistry

Physical or Chemical

100

Shape, color, and textures are all examples of the... 

physical properties of matter

200

Flamability and reactivity are examples of... 

chemical properties of matter

300

Iron rusting is an example of a 

chemical change.

400

Grinding quartz crystals down to produce sand is an example of a

physical change.

500

 Digesting food is an example of a

chemical change.

States of Matter

100

The 3 phases/states of matter are...

solid, liquid, and gas

200

A phase in which matter is extremely high in energy and cannot be contained by ordinary matter;  found in stars.

plasma

300

Atoms in the _______ state of matter are closely spaced and vibrate in this position. It will also not take the shape and volume of the container in which it is being held.

solid

400

The state of ______ allows particles to be father apart and move with greater speed. Pressure builds easily when confined to a set volume. The most movement occurs in this state.

gas

500

___ determines a substances state of matter.

Temperature

Chemistry Vocatulary

100

Mass is...

The amount of matter in an object

200

Matter is....

The amount of matter or "stuff" in an object.

300

Volume is... 

the amount of space that matter occupies

400

An Element is...

The simplest type of pure substance. 

500

A Compound is...

two or more elements chemically combined. 

Density

100

Ice floats in water because...

it is less dense than water.

200

A metal bolt sinks in water because it is...

more dense than water.

300

True or False:  A material's density will not change depending on how much of the material you have.

True

400

The equation to determine the density of a substance is...

Density=Mass/Volume

500

A loaf of bread has a mass of 500 g and volume of 2500 cm3. What is the density of the bread?

.2 g/cm³

Chemical Equations

100

The Law of conservation states:____________. This explains why the mass of a substance remains constant during phase changes.

Mass/matter is neither created no destroyed.

200

The reactants in the chemical equation: 

2H₂ + O₂ → 2H₂O are...

H₂ and O₂

300

The product in the chemical equation: 

2H₂ + O₂ → 2H₂O is...

2H₂O

400

When water (H₂O) is broken down, what happens to the oxygen and hydrogen atoms?

They are rearranged to form hydrogen and oxygen gas

500

You burn a log of wood, and only a small pile of ashes is left. What has happened?

The total mass of the wood and oxygen is the same as the total mass of the ash and gases.