Rocks

Rocks

Bell Ringer What is the contour interval for this map? *Hand back graded work Chemistry Basics

Matter Matter anything that has mass and volume Made of substances called elements Element -- substance that cannot be broken down to simpler substances by any means Matter

The elements hydrogen and helium make up about 99.8% of the elements in the universe (mostly stars) Matter The two most common elements on

Earth are oxygen and silicon, found mostly in rocks and minerals Other common elements on Earth: aluminum, iron, calcium, sodium,

potassium, & magnesium Matter Compounds substances made of two or more combined elements Example: carbon dioxide, CO2, is made of the elements carbon and oxygen

Properties of Matter Chemical property a substances characteristic that indicates whether it can go through a chemical change Examples: flammability, oxidation (reaction with oxygen)

Physical property a substances characteristic that can be observed without changing the substances identity Examples: color, shape, size, phase of matter Properties of Matter Chemical change (chemical reaction) a change

from one substance to another substance Physical change changing a physical property of matter without changing the type of matter Example: phases changes (ice, water, and steam are all still chemically H2O) =

= Ice, water, steam physically different, but all still chemically the same Properties of Matter Law of Conservation of Matter matter may

chemically or physically change, but the quantity stays the same (matter is NOT created or destroyed) Phase Changes Four phases of matter in the universe solid, liquid, gas, and plasma

A substance changes to different phases of matter with the addition or removal of heat Phase Changes Plasma superheated gas particles (temps > 5000oC) So hot they glow

Examples: stars, lightning, and neon lights Phase Changes 4.

5. 3. Evaporation 1.

2. Take a few minutes to prepare for quiz. Any questions? Testing Procedures

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