mass, volume, density

Matter

anything that has a mass and a volume

Mass

The amount of matter in an object. The amount of "stuff" is measured in grams. (weight)

Volume

the amount of space an object takes up. We use cm3 or mL to measure volume.

Formula to calculate volume or a rectangular prism

L x W x H = cm3

How do we measure volume for irregularly shaped objects?

A graduated cylinder and water displacement.

Density

The ratio of mass to volume. Everything has density. It is how much stuff is packed into a given volume.

What is the formula for density?

Density = Mass divided by Volume (D=M/V)

What is the unit measurement of density?

g/cm3

What is the density of water?

1.0 g/cm3

facts about water:

A cube measuring 1cm x 1 cm x 1 cm take up 1 cm3 of space, holds 1mL of water and has a mass of 1 gram.

What are the 3 states (or phases) of matter

solid, liquid and gas

Atom

The smallest unit of matter that still contains of the properties of that matter.

Element

Matter that is made up of one kind of atom.

Molecule

Atoms that are chemically bound together. The smallest particle in a compound that has the all the chemical properties of the compound is a molecule.

Periodic Table of the Elements

The list of more than 100 different elements that are found on Earth.

Heat

makes molecules move faster. In a solid, is results in melting. In a liquid, boiling gives the molecules energy to evaporate, forming a gas.

The removal of heat (cooling)

slows down molecules. In a gas, it causes gas to condense and form a liquid. In liquid, it causes it to freeze

Mixture

is matter made up of two or more materials mixed together, but not chemically joined. Mixing is a physical change.

Examples of physical change:

in a physical change, a substance keeps its chemical composition. Examples are: freezing, boiling, evaporation, tearing and crushing. It is easy to reverse.

Compound

is a result of a chemical change.

Examples of chemical change:

During a chemical change, a new chemical composition and new properties are formed. Examples of chemical changes are: burning of wood, cooking of food, rusting of iron and souring of milk. It is dificult to reverse

What is the boiling point of water?

100 degrees celcius or 212 degrees farenheit

What is the freezing point of water?

0 degrees celcius or 32 degrees farenheit

What is absolute zero?

It is the lowest temperature possible. It is -460 degrees F or -273 degrees or 0 degrees Kelvin