2.1 Study Guide

Question 1

What is the charge of protons?

Answer 1

+1

Question 2

What is the charge of neutrons?

Answer 2

0

Question 3

What is the charge of electrons?

Answer 3

-1

Question 4

What is the weight of protons?

Answer 4

heavy(1amu)

Question 5

What is the weight of neutrons?

Answer 5

heavy(1amu)

Question 6

What is the weight of electrons?

Answer 6

virtually zero

Question 7

What is the location of protons?

Answer 7

in the nucleus

Question 8

What is the location of neutrons?

Answer 8

in the nucleus

Question 9

What is the location of electrons?

Answer 9

outside the nucleus

Question 10

What is the role of protons?

Answer 10

determines the identity of the atom

Question 11

What is the role of neutrons?

Answer 11

holds together the nucleus

Question 12

What is the role of electrons?

Answer 12

responsible for reactivity

Question 13

What is an isotope?

Answer 13

the same atom but with a different nuclear number

Question 14

An element has 8 protons, 8 neutrons, and 10 electrons
What is the atomic mass?

Answer 14

16

Question 15

An element has 8 protons, 8 neutrons, and 10 electrons
What is the element?

Answer 15

oxygen

Question 16

An element has 8 protons, 8 neutrons, and 10 electrons
What is the charge?

Answer 16

-2

Question 17

Neon has an atomic mass of 13 and a charge of 2
What is the number of protons, neutrons, and electrons?

Answer 17

protons - 10
neutrons - 3
electrons - 8

Question 18

Why can isotopes be useful in science research?

Answer 18

They always react the same way in chemical reactions, some are radioactive, and can measure differences in mass