Chemistry

Seating Chart

Syllabus

Isolate Terms AB = CDE X Y

Scientific Method

A systematic method for performing research

Scientific Method Observing Hypothesizing Experimenting Analyzing

Hypothesis

An educated guess

Variables

Anything that can be changed in an experiment

Independent Variable

The variable that is changed by the person doing the experiment

Dependent Variable

A variable that changes due the effects of the independent variable being changed

Scientific Law

Any fact that has been proven beyond any doubt

Scientific Theory

An idea that is supported by much scientific data and is accepted by the scientific community as correct, but cannot be proven

Problem Solving

What do you have? Identify what’s given List the variables

What do you want? Identify what’s being asked for

How do you get it? Identify a formula or an algorithm that can be used to solve the problem

Chemistry The study of matter

Matter Anything that: takes up space has mass has inertia

The measure of matter in an object Mass The measure of matter in an object

Types of Matter Pure: one kind of substance Mixture: 2 or more substances

A specific type of matter Substance A specific type of matter

Pure Substances Elements Compounds

Any pure substance that contains only one kind of atom Element Any pure substance that contains only one kind of atom

A pure substance made up of 2 or more elements chemically combined Compound A pure substance made up of 2 or more elements chemically combined

A Physical blend of substances Mixture A Physical blend of substances

Each part retains its properties Mixture Each part retains its properties

Mixtures Heterogeneous Homogenous

Heterogeneous Mixture Made up of multiple phases Non-uniform

Any physically separate part of a substance Phase Any physically separate part of a substance

Where two phases come together Interface Where two phases come together

Homogeneous Mixture Made up of only one phase Uniform throughout

Solution Homogeneous mixture

Solute Any of the lesser portions of a solution What has been dissolved

Solvent The larger portion of a solution What is doing the dissolving

Separating Mixtures Filtration Distillation Precipitation Chromatography

Filtration Separation by size Passing through pores

Distillation Separation by differences in B.P. Boil & collect

Precipitation Separation by differences in solubility Allow solutions to ppt

Chromatography Separation through charge or polarity differences Separating ink on paper

List and describe all types of pure substances

List and describe all types of mixtures

Classify each of the following as: Pure: element or compound Mixture: hetero. or homo Air, water, mud, the sea, aluminum, orange juice, brass, gold

Matter Work problems 1 - 4 on page 23