SSA Chemistry Review

Mass
Measure of the
total quantity of
matter in an
object.
Measure with a
balance.

Weight
Measure of the
pull of gravity on
an object.
Measure with a
scale.

Volume
The amount of
space an item
takes up.
Measured by
water
displacement.

Element
An substance
that cannot be
broken down
any smaller.

What an atom looks like…

•The center of an atom is called
the nucleus.

• Protons and Neutrons are located

here.

•Electrons are moving around
the nucleus in an empty space
called the electron cloud.

Parts of an atom

•Protons = Positive = inside nucleus

•Neutrons = NO charge = inside nucleus

•Electrons = negative = outside nucleus

Sizes of Subatomic Particles

Compound

When elements
combine to
make new
substances.

3 Main Regions of the Table

Groups (Families) Group 11

•Vertical columns

•Groups are arrangedby similar
chemical and physical
properties

•18 total groups

Periods

• Horizontal rows

• Arranged by increasing Atomic Number & Atomic Mass

• 7 total periods on the periodic table

Compounds

Pure substance composed of two or more different
elements joined by chemical bonds.

•Made of elements in a specific ratio
that is always the same
•Has a chemical formula
•Can only be separated by
chemical means, not physically

H2O

CO2

NaCl

Mixtures

•A combination of two or more pure substances that are not
chemically combined.
•substances held together by physical forces, not chemical
•No chemical change takes place
•Each item retains its properties
in the mixture
•They can be separated physically

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Element, Compound, or Mixture?

Copper

Element, Compound, or Mixture?

Diamond

Element, Compound, or Mixture?

Tea

Element, Compound, or Mixture?

Salt

Element, Compound, or Mixture?

Neon Gas

Element, Compound, or Mixture?

Salad

Element, Compound, or Mixture?

Pure Water

Element, Compound, or Mixture?

Aluminum

Al

Bases

●Bitter

●Big Numbers

●Blue on pH scale

●Cleaning Products

●React with acids to form salts and water

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Acids

þSour

þCorrode metals

þRed on pH scale

þFound in many foods

þReact with bases to form salts and water

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