Unit B section 3

Question 1

2 rules of naming compounds

Answer 1

• metal comes first

- last elements changes ending to ‘ide’

Question 2

where is the physical state of a compund found in the formula

Answer 2

as a subscript in brackets

Question 3

How is an aqueous substance identified in a chemical formula

Answer 3

(aq)

Question 4

what is a molecular compound

Answer 4

2 or more non metals

Question 5

what is an aqueous substance

Answer 5

dissolved in water

Question 9

What is the system of naming compounds?

Answer 9

IUPAC international union of pure applied chemistry

Question 12

what do subscripts in formulas tell us

Answer 12

-how many atoms are in the compound

Question 13

who is naming of the compounds based on?

Answer 13

Guyton de Marveau

Question 14

2 types of compounds

Answer 14

• ionic

- molecular

Question 17

what is an ionic compound

Answer 17

metal and non metal

Question 20

combination of 2 or more elements

Answer 20

compound

Question 21

how are ionic compounds formed?

Answer 21

pure substances formed by the attraction between particles of opposite charges called ions

Question 22

4 properties of ionic compounds

Answer 22

• solid at room temperature
• high melting point
• good electrical conductors
• distinct crystal shape

Question 23

2 properties of ions

Answer 23

• formed when ionic compounds are dissolved in water

- an ion is an atom/group of atoms that become electrically charged due to loss or gain of electrons

Question 24

catios

Answer 24

Positive ion

Question 25

anions

Answer 25

negative ions

Question 26

group of atoms that behave like one individual atom

Answer 26

poly atomic ions

Question 27

what is a molecular compound?

Answer 27

a combination of 2 or more non-metals

Question 28

3 properties of molecular compounds?

Answer 28

• can be solids, liquids and gases at room temperature
• insulators or poor conductors of electricity at r.t
• relatively low melting and boiling points

Question 29

rules for naming molecular compounds

Answer 29

• the last element changes ending to “ide”

- to show the # of atoms use a prefix

Question 30

true or false:

monocarbon dioxide

Answer 30

false

Question 31

rules for drawing molecular compounds

Answer 31

• start with the root element ( least number of atoms in the middle)
• add other elements with branches off the root element