Matter & It’s Properties Lesson 1

The Importance of Physical Properties Physical properties are characteristics of a substance that can be observed or measured without changing the substance What are the physical properties of these bouncy balls? What do I… Hear Smell See Feel Taste

Mass is a Physical Property! Mass is the amount of matter in an object. Matter is anything that has mass and takes up space. This carrot is made of matter and has mass!

Mass Which object has more mass? OR Before you answer.. Which one takes up more space?

Weight Weight is the measure of the pull of gravity on an object. Both cubes have the same amount of mass. Which cube has more weight? The Styrofoam cube OR the metal cube? OR

Volume Volume is the amount of space that an object takes up. How can volume be measured? Volume can be calculated by this formula: Length x width x height = Volume

Density Density is the concentration of matter in an object.

Mixture vs. Solution A mixture is a combination of two or more different kinds of matter. A solution is a type of mixture in which particles of the two substances are mixed. Solubility- the ability to be dissolved.

Changes in State Lesson 2

Solid, Liquid and Gas Feels firm when you touch it because the particles that make it are packed tightly together. Liquid particles move freely enough to slide past one another. That way, they can change shape! Particles are far apart and move the fastest. They are able to float to the top and escape into the air

Evaporation & Precipitation Evaporation occurs when particles escape from a non-boiling liquid and become a gas Precipitation occurs when liquid or solid water (snow) particles fall from the atmosphere and reach the Earth.

Condensation Condensation changes a substance from a gas to a liquid. Think of a cold glass of water on a hot day.. Water vapor in the air is cooled on the surface of the glass. It condenses and then forms water drops.

Freezing & Boiling Boiling point of water is 212 F Freezing point of water is 32 F

Melting Different substances melt and boil at different temperatures.

Changes in Matter Lesson 3

Physical & Chemical Changes Physical Change: When matter changes size, shape or form to = Physical Change to

Physical & Chemical Change Chemical Change: When the substances that make up an object are changed and made into other substances. to = chemical change to

Examples of a Physical Change Piece of paper ---- Rip It ---- Still a Piece of paper

Examples of a Chemical Change Perhaps you have found a half eaten apple that turns brown.  The reason is that a chemical change has occurs when food spoils.

Examples of a Chemical Change The explosion of fireworks is an example of chemical change

Clues that a Chemical Change Happened Odor Changes It only takes one experience with a rotten egg to learn that they smell different that fresh eggs.  When eggs and food spoil, they undergo a chemical change.  The change in odor is a clue to the chemical change

Clues that a Chemical Change Happened Production of Gases The formation of a gas is a clue to chemical changes.  The bubbles of gas that you observed form when an antacid is dropped into water is an example of change.

Clues that a Chemical Change Happened Energy - Absorbed or Released Another sign of a chemical change is the release or gain of energy by an object.  Many substances absorb energy to undergo a chemical change.  Energy is absorbed during chemical changes involved in cooking, like baking a cake.

Play the Game! Lets test how much you know about Physical and Chemical changes! http://vital.cs.ohiou.edu/steamwebsite/downloa ds/ChangeLab.swf

REACTIVITY! When a substance reacts chemically to another substance Potassium & Water https://www.youtube.com/watch?v=oqMN3y8k9So Mercury & Corn Syrup https://www.youtube.com/watch?v=SfWroEXaRoY

Combustibility The chemical property of being able to burn. Easily Burned Not Easily Burned