Learn about matter and its different properties.

1. Matter and its
Properties

2. • Mass: the measure of the amount of matter
• Matter: anything that has mass and takes up
space

3. Building blocks of matter
• Atom: smallest unit of an element that maintains
the chemical identity of that element
• Element: pure substance that cannot be broken
down into simpler, stable substances and is made
of one type of atom
• Compound: a substance that can be broken
down into simple stable substances. Each
compound is made from the atoms of two or
more elements that are chemically bonded

4. Properties and changes in matter
• Extensive properties: depend on the amount of
matter present - volume, mass
• Intensive properties: do not depend on the
amount of matter present – melting point,
density

5. Physical Properties
• 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 the
substance

6. States of Matter
• Solid: has a definite volume and shape
• Liquid: has a definite volume but indefinite shape
• Gas: has neither definite volume or shape
• Plasma: high-temperature physical state of
matter in which atoms lose most of their
electrons

7. Chemical Properties
• Chemical property: relates to a substance’s
ability to undergo changes that transform it into
different substances
• Chemical change: also called a chemical reaction,
this is when one or more substances are
converted into different substances
• Substances that react are called reactants. The
substances that are formed are called products.

8. Classification of matter
• Mixture: a blend of two or more kinds of matter,
each which retains its own identity and
properties
– Homogeneous(solution)- uniform
– Heterogeneous- not uniform

9. • Pure substance- either a compound or an
element
– Every sample of a given pure substance has
exactly the same characteristic properties
– Every sample of a given pure substance has
exactly the same composition

10. Section Review
• What is the main difference between physical
properties and chemical properties?
• Physical or chemical change
– Tearing a sheet of paper
– Melting a piece of wax
– Burning a log

11. • Look at page 13 in the book. How can you tell
that there are reactions taking place in the
figure?