unit 1: matter and change

C H E M I S T R Y B H S 2 0 1 3 - 2 0 1 3

M S . J E N S E N

UNIT 1: MATTER AND CHANGE

MATTER

• Notes Pages 1-2

BUILDING BLOCKS OF MATTER

•Matter – Anything that takes up space and has mass

BUILDING BLOCKS OF MATTER

•Matter – Anything that takes up space and has mass•Mass – Measure of amount of matter • Measured in grams, g

WEIGHT V. MASS

BUILDING BLOCKS OF MATTER

•Matter – Anything that takes up space and has mass•Mass – Measure of amount of matter (grams)• Atom – Smallest part of an element that maintains the properties of that element• Comes from Greek “átomos”, which means

“uncuttable” or “the smallest indivisible particle of matter”• Was coined in 450 BCE by Democritus

ATOMS

BUILDING BLOCKS OF MATTER

•Matter – Anything that takes up space and has mass•Mass – Measure of amount of matter (grams)• Atom – Smallest part of an element that maintains the properties of that element• Element – Pure substance with only one type of atom• Cannot be separated into a simpler substance

ATOM OF GOLD (AU)

ATOMS OF GOLD (AU)

ELEMENTAL GOLD

BULLION: PURE SUBSTANCE (GOLD) WITH ONLY ONE TYPE OF ATOM

BUILDING BLOCKS OF MATTER

•Matter – Anything that takes up space and has mass•Mass – Measure of amount of matter (grams)• Atom – Smallest part of an element that maintains the properties of that element• Element – Pure substance with only one type of atom• Compound – Pure substance, atoms of two or more elements are chemically bonded

COMPOUNDS

• Water, H2O, contains two elements:• Oxygen and Hydrogen

• Caffeine, C8H10N4O2, contains four elements:• Carbon, Hydrogen, Oxygen, and Nitrogen

BUILDING BLOCKS OF MATTER• Matter – Anything that takes up space and has mass• Mass – Measure of amount of matter (grams)• Atom – Smallest part of an element that maintains

the properties of that element• Element – Pure substance with only one type of atom• Compound – Pure substance, atoms of two or more

elements are chemically bonded• Mixture – A combination of two or more pure

substances that are not chemically bonded

MIXTURES

• Heterogeneous Mixture: • Components that make up the mixture are not uniform• Rocks, oil and water, soup, pizza

• Homogenous Mixture: • Components that make up the mixture are uniformly

distributed throughout• Air, sugar water

CAN YOU IDENTIFY THE FOLLOWING?

You will be shown a series of photos. Tell if each photo represents an item composed of an element, compound, or mixture.

Review:• An element contains just one type of atom. • A compound contains two or more different

atoms joined together. • A mixture contains two or more different

substances that are only physically joined together, not chemically.• A mixture can contain both elements and compounds.

ELEMENT, COMPOUND, OR MIXTURE?Rocks

ELEMENT, COMPOUND, OR MIXTURE?Rocks

ELEMENT, COMPOUND, OR MIXTURE?

Copper

ELEMENT, COMPOUND, OR MIXTURE?

CopperCu

ELEMENT, COMPOUND, OR MIXTURE?

Jelly Beans

ELEMENT, COMPOUND, OR MIXTURE?

Jelly Beans

ELEMENT, COMPOUND, OR MIXTURE?

Table Sugar

ELEMENT, COMPOUND, OR MIXTURE?

Table SugarC 12H 22O 11

ELEMENT, COMPOUND, OR MIXTURE?

Diamond

ELEMENT, COMPOUND, OR MIXTURE?

DiamondC

ELEMENT, COMPOUND, OR MIXTURE?

Tea

ELEMENT, COMPOUND, OR MIXTURE?

Tea

ELEMENT, COMPOUND, OR MIXTURE?

Salt

ELEMENT, COMPOUND, OR MIXTURE?

SaltNaCl

ELEMENT, COMPOUND, OR MIXTURE?

Neon Gas

ELEMENT, COMPOUND, OR MIXTURE?

Neon GasNe

ELEMENT, COMPOUND, OR MIXTURE?

Salad

ELEMENT, COMPOUND, OR MIXTURE?

Salad

ELEMENT, COMPOUND, OR MIXTURE?

Pure Water

ELEMENT, COMPOUND, OR MIXTURE?

Pure WaterH 2O

ELEMENT, COMPOUND, OR MIXTURE?

Aluminum

ELEMENT, COMPOUND, OR MIXTURE?

AluminumAl

ELEMENT, COMPOUND, OR MIXTURE?

Lemonade

ELEMENT, COMPOUND, OR MIXTURE?

Lemonade

ELEMENT, COMPOUND, OR MIXTURE?

Silver

ELEMENT, COMPOUND, OR MIXTURE?

SilverAg

ELEMENT, COMPOUND, OR MIXTURE?

Sand

ELEMENT, COMPOUND, OR MIXTURE?

Sand