​Classifying Matter

All matter can be classified as follows:

​Molecules

​Compounds & Fixed Ratios

​1

​Cl

​H

​State Changes

​ All elements and compounds can exist in different states of matter at different temperatures/ pressures. Changing from one state to another is a physical change because no new chemicals are made in the process of changing a state.

​States of Matter

​Explore this simulation to change states of different elements/compounds by adding or removing energy. Complete the chart blow.

​States in Physical Changes

​Complete this chart using the examples in the next slides....

​There are 4 states writing physical or chemical changes:

• ____ for solid (ionic compounds, some covalent compounds, most metals)

• ____ for liquid (bromine, water, ammonia, ethanol, mercury, etc)

• ____ for gas (diatomic gases, CO2)

• ____ for aqueous (when a chemical is dissolved in water) 

​States in Chemical Changes

​Separating Mixtures

​We will now practice different techniques for separating mixtures. Refer to your notes for details on each.

​Kinetic Energy & Temperature

​The faster something moves, the more kinetic energy it has:

​Explore the simulation to help you figure out the definition of temperature by add/removing heat and seeing its effect on temperature.

Definition: The _____________ kinetic _____________ of particles.

Kelvin & Celsius Scales

• A degree change of a degree Celsius or kelvin represents the same energy change.

• The kelvin scale is an absolute scale because the lowest possible value is 0.

• The Celsius scale is a relative scale because its measurements are relative to the freezing point of water.

Kelvin & Celsius Scales

​This is given in the Data Booklet incase you forget.