Characteristic Properties of Matter

How Are You Identified? Eye Color Hair Color* Skin Color Fingerprints DNA

These are all characteristics you have that will stay with you for life and can be used to identify you.

*may change due to age or vanity

First, A Quick Review

Matter is anything that has mass and takes up space.

Matter is the “stuff” (atoms and molecules) that makes up the universe

Matter is stuff

Examples of Stuff (aka matter)

Plants, animals, rocks, water, soda, air, oxygen are all examples of matter

Matter can be living or non living Matter can be solid, liquid or gas They are all made of atoms and molecules They all have mass and take up space They are all “stuff”. Yet all of the examples of

stuff listed above are different They all have different characteristics or

properties that can be used to identify them Characteristics of matter can be either physical

properties or chemical properties

Characteristic Properties of Matter

Characteristic properties help scientists identify a particular substance

Characteristic properties are always the same for each kind of matter

Characteristic properties do not change even though the shape or amount of matter may change

Characteristic properties are like the eye color, hair color, skin color, fingerprints and DNA of matter

What Are Some Physical Characteristic Properties?

Physical properties can be seen or measured without changing the

identity of the substance identified or described with your senses

Melting point, boiling point, freezing point State of matter at room temperature (solid,

liquid or gas) Density Magnetic properties Solubility (will it dissolve in another substance?) Conductivity (will it conduct heat, electricity) Ductility, malleability (can it be drawn into a

wire or pounded into a thin sheet)

What Are Some Physical Characteristic Properties?

What Are Some Chemical Characteristic Properties?

Chemical properties may not be observed with your senses. determines how a substance interacts with

another substance. determine if the substance can change into

a new substance with different properties. Flammability Reactivity (how it behaves in the presence of

another substance) Oxidation (another word for rust and tarnish)

What Are Some Chemical Characteristic Properties?

Can You Identify? Physical Properties:

Liquid at room temperature Boiling point is 100 0C Color is clear Density is 1 g/cm3

That was easy!

Let’s Try Another! Physical Properties

Density is 8.96 g/cm3

Insoluble in H2O Ductile, malleable

Chemical Properties Oxidizes Reacts with acids

Hint? What do you think the flame is made of? Does gold (Au) oxidize? How do you know?

Now You’re On Your Own

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