1. CHEMISTRY THE STUDY OF MATTER AND HOW IT CHANGES
CHEMISTRY CH 1 SEC 1
CHEMISTRY
THE STUDY OF MATTER AND HOW IT CHANGES

2. BUILDING BLOCKS OF MATTER
ELEMENTS
Cannot be broken down into simpler substances (a pure substance)
Compounds
Two or more atoms chemically combined in a definite ratio
Ex CO2 This compound has 1 part C for every 2 O

3. COMPOUNDS
In nature the majority of chemicals are found as compounds

4. MIXTURES & SOLUTIONS MIXTURES
Are made up of elements or compounds in the same place but not chemically combined. EX salt and pepper
SOLUTIONS
A well mixed mixture usually a liquid
Ex Sea water- You can’t see the salt but you can taste it and it can be separated easily

5. CHANGES IN MATTER PHYSICAL CHANGE
A change that effects the form or appearance of a substance BUT no new material is formed.
Ex- water is boiled and becomes a gas But it is still WATER (vapor)

6. CHANGES IN MATTER CHEMICAL CHANGES
A change that produces new substances but the same elements are used.
EX when wood burns-Carbon,xygen and water are formed.

7. OBSERVING CHEMICAL REACTIONS
COLOR CHANGE
PRECIPITATE FORMED
GAS PRODUCED
CHANGE IN TEMPERATURE
EXOTHERMIC
ENDOTHERMIC
CHANGE IN PROPERTIES

8. SMART WORDS ELEMENT ATOM COMPOUND MOLECULE MIXTURE SOLUTION
PHYSICAL CHANGE
CHEMICAL CHANGE

9. SMART WORDS
CHEMICAL REACTION
CHEMICAL BONDS
IONIC
COVALENT