Unit 2 Notes 5

Question 1

Ionic Compounds

Answer 1

ionic compounds are composed of metals and non- metals. Greek prefixes are not used in naming or writing formulas. instead we use charges.

Question 2

Binary Ionic Compounds

Answer 2

composed of a metal and a non-metal

Question 3

Polyatomic Ionic Compounds

Answer 3

composed generally of a metal and 2 or more non-metals

Question 4

Naming Ionic Compounds

Answer 4

1. The name of the first ion as it appears on the periodic table or ions table
2. The second ion if it is a single element end with “ide”. If the second ion is polyatomic it is named as it appears on the table.

Question 5

Writing Formulas for Ionic Compounds

Answer 5

1. write the symbols and their charge
2. Check to see it the charges add up to zero.
   i) if they add up to zero, rewrite the sympols w/o the charges
   ii) if they do not add to be zero, criss cross the charges and write them as subscripts (wo the + or - sign)

Question 6

Reactants

Answer 6

what you start with (LHS of equations)

Question 7

Products

Answer 7

what you form (RHS of equations)

Question 8

Coefficients

Answer 8

Numbers placed of in front of formulas to make the atoms on each side equal.

Question 9

Types of Reactions

Answer 9

1. Synthesis (composition)
2. Decomposition
3. Combustion
4. Single Replacement
5. Double Replacement
6. Water Forming

Question 10

Synthesis

Answer 10

To make something
A + B ———> AB

Question 11

Decomposition

Answer 11

To break something down
AB ———> A + B

Question 12

Combustion

Answer 12

To burn something, giving off heat and light

Question 13

Hydrocarbons

Answer 13

compounds cosisting of hydrogen and carbon ,producing carbon dioxide and water.

Question 14

Single Replacement

Answer 14

When one element in a compound replaces another
A + BC ———> AC + B

Question 15

Double Replacement

Answer 15

Elements of one compound replace
elements of another compound

Question 16

Water Forming

Answer 16

Reactions making water as one of the products