everything Flashcards
Classification of Matter
solid, liquid, gas
elements:
pure substance
compounds:
2 or more elements combined
Chemical and Physical Properties
physical:
characteristics that describe a substance
ex. colour, shape
chemical:
how substances interact with eachother or heat
ex. ability to burn
Chemical and Physical Change
physical:
- change in form
- no new substance
chemical:
- new substance IS formed
- irreversible
Elements in the same periodic table column have similar properties
Types of Oxidation Reactions
cellular respiration:
- takes place in body cells
- include energy, carbon dioxide and water
combustion:
- fuel needed
- oxygen
- gives off heat
corrosion:
- combination of moisture and oxygen
- change in colour
- rusting
all give off energy
WHMIS Lab Safety
workplace hazard materials information system
-symbols seperate-
The Law of Conservation of Mass
- mass is neither created or destroyed
Electrons,Protons and Neutrons
e = (-)
p = (+)
n = (=)
Ionic and Molecular Compounds
ionic:
- transfer of electrons
- metals + non-metals
- good electical conductors
- always solid
molecular:
- linked together by sharing of electrons
- 2 non-metals
- poor electrical conductors
- any state
Metals and Non-Metals
metals:
hard
non-metals:
soft
Chemical Families
the alkali metals
the alkaline earth metals
the halogens
the noble gases
Compound Naming (ionic and molecular)
1 - mono
2 - di
3 - tri
4 - tetra
5 - penta
prefix only for second element in molecular compounds
add ‘ide’ to both molecular and ionic compounds
Reactants and Products
reactants:
start chemical reaction
products:
what is created in the reaction
Exothermic and Endothermic Reactions
EXOthermic:
releases heat
endothermic:
absorbs heat
Chemical Equations
ex.
calcium and chlorine
CaCl2(s)
