Chapter 4

Question 1

vertical column

Answer 1

group

Question 2

horizontal row

Answer 2

period

Question 3

shiny, malleable, good conductors of heat/electricity

Answer 3

metal

Question 4

dull, poor conductors of heat/electricity

Answer 4

nonmetals

Question 5

properties between metals and nonmetals

Answer 5

metalloids

Question 6

what forms cations (+)

Answer 6

metal

Question 7

what forms anions (-)

Answer 7

nonmetals

Question 8

list dalton’s atomic theory from workbook

Answer 8

1. all matter is composed of atoms
2. all atoms of one element differ from those of other elements
3. atoms combine in simple, whole number ratios to form compounds
4. atoms are not created or destroyed, just rearranged

Question 9

what do we know now (from workbook)

Answer 9

1. are composed of even smaller particles (proton, neutron, electron)
2. can have their identity changed through nuclear reactions
3. have isotopes which means they’re not all identical

Question 10

number of protons

Answer 10

atomic number

Question 11

number of protons/neutrons

Answer 11

mass number

Question 12

same atomic number/different atomic mass, same element with different number of neutrons

Answer 12

isotopes

Question 13

weighted average of all masses of an elements isotopes

Answer 13

atomic mass