compounds

Question 1

what is an element

Answer 1

a substance that cannot be broke down into anything simpler by chemical means, they are made of just one type of atom

Question 2

what is a compound

Answer 2

a substance that’s
are of two or more different types of atoms, chemically bonded and difficult to separate

Question 3

how do represent compounds with a symbol formula

Answer 3

number represents the amount of that atoms in the compound

Question 4

what is a space filler diagram

Answer 4

use the key to represent each atom
count how many there are of each atom to write the symbol formula

Question 5

how to find the formulae of ionic compounds

Answer 5

use the common iron table
for example
iron(lll) = Fe3+
and oxide O2-
then get rid of the charges so it’s just the letters and numbers
then swap them and put them at the bottom instead of top
if there are two numbers on one compound add brackets