CHEMISTRY SEPTEMBER 16, 2014 Matter

SCIENCE STARTER Work on Science starter You have 3 minutes This is silent and individual work

OBJECTIVES SWBAT – Define matter – Classify matters

AGENDA Science Starter Matter video Discuss what is matter Matter worksheet

Quiz makeup Quiz makeup will be this Thursday You can come during my office hours (4 th period) or during 9 th period (all the way up to 4:15PM)

Matter Video

What is matter? anything that has mass and take up space

How to classify matter

Is it Uniform? If it is uniform = homogeneous If it is not uniform = heterogeneous

Examples

Example

Pure Substance sample of matter, either an element or a compound that has definite chemical and physical properties

Element a substance that can not be separated or broken down into simpler substances by chemical means. All atoms of an element have the same atomic number (E.g., oxygen, carbon) – - can be a single atom – - can be a molecule – - two or more atoms of the same type.

Example

Compound a substance made up of atoms of two or more different elements joined by chemical bonds (e.g., water, carbon dioxide) – Properties of the compond may be different from the properties of the original elements – Smallest unit is a molecule Two or more atoms of different types

Example

Molecule the smallest unit of a substance that keeps all of the physical and chemical properties of that substance.

Example

Mixture a combination of two or more substances that are not chemically combined (E.g., glass of tea, – Mixture can vary in composition and properties – Properties of the mixture reflect the properties of the substances it contains – Can be homogeneous or heterogeneous

Heterogeneous not uniform Properties are not uniform throughout Different regions have different properties

Example

Homogeneous uniform throughout Properties are uniform throughout

Example

Matter Worksheet Do worksheet Read the Aim 5