Chapter 2: Basic Chemistry

Question 1

matter

Answer 1

anything that takes up space and has mass

Question 2

elements

Answer 2

substance that cannot be broken down into other substances with differnt properties

Question 3

property

Answer 3

chemical or physical characteristic

Question 4

atoms

Answer 4

smallest part of an element that shows the properties of that element

Question 5

atomic symbol

Answer 5

2 letters that stand for the name of the atom or element

Question 6

protons

Answer 6

positive subatomic particle in the nucleus

Question 7

neutrons

Answer 7

neutral subatomic particle in the nucleus

Question 8

electrons

Answer 8

negative subatomic particle around the nucleus in orbitals

Question 9

atomic mass

Answer 9

equal to the sum of its protons and neutrons

Question 10

atomic number

Answer 10

number of protons

Question 11

isotopes

Answer 11

atomso fthe same element that share number of prtons, but differ in the number of neutrons

Question 12

radioactive isotope

Answer 12

emits radiation when it decays

Question 13

electon shells

Answer 13

concentric energy in which electrons orbit

Question 14

octet rule

Answer 14

outer shell is the most stable when it holds 8 electrons