Part 1

Question 1

what charge do protons carry?

Answer 1

positive

Question 2

what charge do neutrons carry?

Answer 2

neutral

Question 3

what charge to electrons carry?

Answer 3

negative

Question 4

what are valence electrons?

Answer 4

the electrons farthest from the nucleus

Question 5

what is the smallest unit of a chemical element?

Answer 5

atom

Question 6

what subatomic particles are atoms composed of?

Answer 6

protons, neutrons and electrons

Question 7

what subatomic particles form the nucleus of an atom?

Answer 7

protons and neutrons

Question 8

where do electrons exist?

Answer 8

outside the nucleus in orbitals

Question 9

atomic number = ?

Answer 9

atomic number = number of protons

Question 10

mass number = ?

Answer 10

mass number = number of protons + neutrons

Question 11

in a neutral atom the number of protons = ?

Answer 11

NAME?

Question 12

what is an ion?

Answer 12

results due to loss or gain of electrons (when an atom has a positive or negative charge)

Question 13

what is atomic weight?

Answer 13

common convention used to define the mass of an atom

Question 14

what is an isotope? **

Answer 14

same number of protons (atomic number) different number of neutrons (different mass number)

Question 15

what is ionization energy?

Answer 15

energy required to remove an electron completely away from a gaseous atom or ion

Question 16

what is electron affinity?

Answer 16

the energy change that occurs when an electron is added to a gaseous atom.

Question 17

what does electron affinity represent?

Answer 17

the ease with which an atom can accept an electron

Question 18

do alkaline earth metals have high or low electron affinity?

Answer 18

low

Question 19

do halogens have high or low electron affinity?

Answer 19

high- because they just need one more electron to have an octet