Unit 3 Chem Compounds Flashcards
What is an element
Where there a a collection of only one type of atoms
A substance with
Two or more elements, whose atoms are chemically combined, in a fixed proportion can be an compound
What do you have to state when describing a substance
State colour
Silicon
Shiny grey solid
Sulfur
Yellow solid
Copper
Shiny red brown solid
Carbon
Black solid
Iron
Shiny grey solid
Copper oxide
Black/red powder solid
Silicon dioxide
White solid
Copper sulfate
Blue sand solid
Iron sulfide
Black rock solid
Copper carbonate
Green solid
Iron sulfate
Green/blue solid crystals
Oxygen
Colourless gas
What are molecules
A particular compound will always contain the same number of atoms and joined together in the same ways
Group 4
4 bonds
Group 5
3 bonds
Group 6
2 bond
Group 7&hydrogen
1 bond
Group 0
No bonds
What does 1 line mean when drawing a compound
1 bond
