2.1.2 compounds, formulae and equations

Question 1

what does an ionic equation show

Answer 1

it shows the reacting particles and the products they form

Question 2

how does position in the periodic table allow us to predict the ion charge

Answer 2

the group that it is in shows the number of electrons in its outer shell so we can figure out how many electrons it needs to loose or gain to gain a full outer shell and therefore the charge on the ion

Question 3

what are the four state symbols used in equations

Answer 3

s - solid
l- liquid
g - gas
aq - aqueous

Question 4

how are ions formed

Answer 4

when electrons are transferred from one atom to another which causes an imbalance of charge in the atom

Question 5

how are ionic compounds formed

Answer 5

electrostatic attractions between positively and negatively charges ions

Question 6

what is the formula of a nitrate ion

Answer 6

NO3-

Question 7

what is the formula of a carbonate ion

Answer 7

CO3 2-

Question 8

what is the formula of a sulfate ion

Answer 8

SO4 2-

Question 9

what is the formula of a hydroxide ion

Answer 9

OH-

Question 10

what is the formula of an ammonium ion

Answer 10

NH4+

Question 11

what is the formula of a zinc ion

Answer 11

Zi 2+

Question 12

what is the formula of a silver ion

Answer 12

Ag+