The Powerpoint of the First Unit

1. M A T T E R A N D I T S P R O P E R T I E S
Unit 1

2. Building Blocks of Matter
Mass – A measure of the amount of matter
Matter – Anything that has mass and takes up space
Atom - Smallest Unit of an element that maintains
the chemical identity of that element
Element – Pure substance that can be broken down
into simpler, stable substances
Compound – A substance that can be broken down
into simple substances (elements).

3. Properties and Changes in Matter
Intensive Properties – Do not Depend on amount of
matter present
Extensive Properties – Depend on the amount of
matter that is present

4. States of Matter
Solid – State of matter that has a definitive state and
volume
Liquid – Definite Volume but indefinite shape
Gas – Neither definite volume nor shape
Plasma – High temperature physical state of matter
in which atoms lose most of their electrons, particles
that make up atoms

6. Classification of Matter -Mixtures
Mixture – A blend of two or more kinds of matter, each
of which retains its own identity and properties
Homogeneous Mixture – Uniform in Composition
Solution – A homogeneous mixture in which one
substance is dissolved in another
Heterogeneous Mixture – Non-Uniform in composition
Colloid – Particles are mixed together but not dissolved.
It will not separate upon standing. The particles are
constantly colliding, which allows light to scatter,
appearing cloudy.
Suspension – Particles mixed together that settle out
when standing.

8. Pure Substances
A pure substance has a fixed composition and differs
from a mixture in that
1. Every sample of a pure substance have the same
characteristics throughout.
2. Every sample of a pure substance has the same
composition throughout

9. Physical Properties and Changes in Matter
Physical Property – a characteristic that can be
observed or measured without changing the identity
of the substance
Physical Change – A change in substance that does
not involve a change in the identity of a substance
Change of State – Changing of a phase of matter

10. Chemical Properties and Chemical Change
Chemical Property – Relates to a substance’s ability
to undergo changes that transform it into different
substances
Chemical Reaction – A change in which one or more
substances are converted into different substances
Reactants – The substances that react in a chemical
change
Products – The substances that are formed by the
chemical change

11. Physical VS Chemical Changes
Physical
substance changes
state but does not
change its chemical
composition.
crumpling a sheet of
paper
melting an ice cube
casting silver in a mold
breaking a bottle
Chemical
substance changes
into something new.
burning wood
dissolving salt in water
mixing acid and base
digesting food

12. Physical Changes
Shape and size changes Mixing and dissolving

13. Chemical Changes

14. Reactants and Products
Reactants are the substances combined to form
Products.