REVIEW ON MATTER

List 3 Examples of Matter:1. Solids- definite shape and volume2. Liquids- definite volume, no definite shape3. Gases – No definite shape, no definite volume

Physical Changes vs. Chemical ChangesPhysical: Matter physically changes- keeps its identity

1. freezing water. Cutting paper2. Crushing an aluminum can, mixing oil and vinegar

Chemical: Matter chemically changes- does not keep its identity1. baking soda reacting with water or vinegar2. soured milk, rust, cooking or burning

REVIEW CONTINUEDDefine each of the followingMass: the amount of matter that something is made ofVolume: the amount of space that something contains or

occupiesWeight: a measure of the gravitational force put on an object

What is the formula to calculate density? D = m/v

What are the properties of:

Solid: particles arranged in an orderly way, vibrating back and forth

Liquid: particles are spread out more than a solid and slide past each other.

Gas: particles move rapidly overcoming mostly all of their attraction to each other.

What is Boyles Law? Give an ExampleIncrease pressure, decrease volume at a constant

temperatureExample: Balloon being squeezed, rolling up a filled zip-

lock bag

What is Charles Law? Can you give an Example?Increase temperature, increase volume at a constant

pressureExample: Hot air balloon.Define the following: Describe each oneFreezing- Change of state from a liquid to a solid,

exothermic changeExample: Water turning to iceMelting- Change of state from a solid to a liquid,

endothermic changeExample: Ice melting to water.

Evaporation - vaporization that occurs at the surface of a liquid below its boiling point.

Example: liquid turning to water vapor, endothermic changeCondensation- Change of state from a gas to a liquid.

Exothermic change. Example- Water drops forming on the outside of ice water

What is an Element? Is a pure substance that can not be separated or broken down into simpler substances by physical or chemical means.

Properties of elements: melting point, boiling point, density.

2 examples of elements:1. gold2. silver

3 categories of elements1. metals2. non-metals3. metalloids

Define:Compound- a pure substance composed of two or more

elements that are chemically combined.2 Examples:

1. water – H2O2. carbon dioxide - CO2

Define:Solubility- ability to dissolve into another substance.Example- salt dissolving into waterSolvent – the substance in which a solute is dissolved to

form a solution. Example- Salt water, water is the solventSolution – a mixture that appears to be a single substance

but is composed of particles of two or more substances that are distributed evenly amongst each other.

PRACTICE QUESTIONS1. Gravity effects weight. The gravitational force is higher

with large masses.

2. They do not have the same weight but do have the same volume because they are the same size but the bowling ball has more matter.

3. Condensation because the water vapor from the air has condensed and turned back into a liquid onto the grass.

4. Balloon would shrink because decrease temperature, decrease volume which proves Charles’s Law

5. As water heats up, the particles gain energy and move away from each other turning into a gas. Particles that evaporated have more energy than particles in the pot.

6. Water is the universal solvent.