Matter

Matter

Matter Anything that has mass (grams) and

occupies space (volume).

Volume: a measure of the size of a body or region in three dimensional space.Solid Volume (of a cube or rectangle):

Length x width x heightcm x cm x cm = cm3

MatterLiquid volume is found by using a

graduated cylinder

Gas volume is the same as the container it fills.

Matter Mass – quantity of matter contained in an

object.

Measured on a balance in grams, mg, etc.

WEIGHT is not mass! Weight is the gravitational force exerted on an object! It’s value can change from place to place. MASS is the same everywhere!

MatterPhysical property:

A characteristic of a substance that does NOT involve a chemical change

Examples:DensityColorHardnessMassVolume

MatterDensity Mass and volume depend upon how

much substance you have. The relationship between these two properties is called DENSITY.

Density can be used to help identify a substance.

MatterFormula for density:

Density = Mass = g or g Volume mL cm3

Also written as:D = m V

MatterDensity Problems1. If mass = 129 g and volume = 10 mL,what is the density?

2. The manufacturer of a shampoo wants to determine how many grams of shampoo would fit in a 350 mL bottle. If the density of the shampoo was 19.8g/mL, how many grams of shampoo would fit in the bottle?

MatterClassification:

All matter is made of atoms.

Atom: smallest unit of an element that maintains the properties of that element.

MatterTwo classifications:1. Pure substances

Can be an element (gold) or a compound (water)

Has definite physical and chemical properties

2. Mixture A combination of two substances that are

NOT chemically combined (rocks and marbles)

MatterElement – a pure substance that

contain only one kind of atomSilverCopper

MatterCompound

Composed of two or more atoms

Example: Magnesium Chloride and Cobalt Chloride

Cobalt Chloride1 atom of Cobalt2 atoms of ChlorineCoCl2

Magnesium Chloride1 atom of Magnesium2 atoms of ChlorineMgCl2

MatterMixtures

Contain two or more pure substancesDoes not always have the same

balance of ingredients

Example: airContains oxygen, nitrogen,etc.

MatterMixtures: two types1. Homogeneous: pure

substances are mixed evenly throughout

2. Heterogeneous: contains substances that are not evenly mixed

Iron and Sulfur

Milk

MatterDistinguishing mixtures from

compounds Compounds:

1. Two or more elements chemically combined

2. Have a definite composition

3. Properties of a compound are different than the properties of the elements that make it up.

Mixtures:

1. Two or more substances physically mixed together2. Substances may be present in varying proportions3. Properties of the mixture reflect the properties of the substances it

contains.