MATTER PURE The universe is composed of matter

MATTER PURE

The universe is composed of matter energy either _______ or _______.

mass Matter is anything that has _______ space and occupies ____. trees air bear rocks soil water

Mass is a measure of the amount of matter ________ in an object. Grams , g The unit for mass is ________.

Compare the masses

Volume is the measure of the space occupied _______by an object.

atoms All matter is made up of _______. smallest unit of matter Atoms are the ___________.

There are two types of matter: (1) Pure substance (2) Mixture

PURE SUBSTANCE Pure substances is matter that is composed of an element or a compound and cannot be separated by physical or chemical means.

Pure substance

Pure substance

Pure substance

An element is a pure substance made up of one type of atom.

Aluminum, Al Aluminum is an element. A piece of aluminum is composed of billions of atoms of aluminum. Each atom of aluminum is identical.

There are 109 elements. Examples? ? ?

What makes one element different from another element? Their atoms!

The atoms of different elements are different! Difference # protons # neutrons # electrons size mass A hydrogen atom A carbon atom

There are 109 different atoms.

ELEMENT One type of atom Only red atoms Only blue atoms

Most elements do not exist alone. Elements combine to form compounds. Compound is a pure substance that is composed of atoms of two or more different elements(atoms) chemically joined.

WATER - - - a liquid H 2 O two atoms of hydrogen Water is composed of the elements O H one atom of oxygen H oxygen and hydrogen

carbon dioxide - - - a gas CO 2 one atom of carbon two atoms of oxygen O C O

table sugar --- a solid (sucrose) C 12 H 22 O 11 12 atoms of carbon 22 atoms of hydrogen 11 atoms of oxygen

WATER --- H 2 O , a liquid Water is composed of the elements oxygen and hydrogen gas O H H liquid

Table salt - - - Na. Cl --- sodium chloride Sodium (Na) is a solid chlorine (Cl) is a poisonous gas, yet they combine to form table salt, an edible solid.

Compounds are completely different from the elements that make them up!!!! Na. Cl H 2 O

sodium + chlorine = sodium chloride Na + Cl = Na. Cl http: //www. youtube. com/watch? v=tb. Pxw. Di. X 1 NU

hydrogen + oxygen = H 2 + O 2 = water H 2 O http: //www. youtube. com/watch? v=DP 05 fx. R 4 o. Uk

COMPOUND Two or more different atoms chemically attached Two different atoms Three different atoms

Element or compound? element compound

Element or compound? element

Element or compound? compound

Element or compound? Compound

Element or compound? element

Element or compound? Compound

Element or compound? Compound

Element. Compound or compound?

Element or compound? Compound

Element or compound? element