elements and compounds

Question 1

alkali metal

Answer 1

a soft shiny metal that is highly reactive, located in the first group excluding hydrogen

Question 2

atom

Answer 2

the smallest particle of an element

Question 3

atomic number

Answer 3

the number by which elements are ordered in the periodic table

Question 4

boiling point

Answer 4

the temperature at which a substance changes from liquid to gas

Question 5

brittle

Answer 5

easily broken

Question 6

chemical bond

Answer 6

an attractive force that holds two atoms together

Question 7

chemical formula

Answer 7

a symbol that shows the chemical composition of a substance

Question 8

chemical symbol

Answer 8

one to three letters used to represent an element

Question 9

compound

Answer 9

a substance made up of two or more types of atom bonded together

Question 10

element

Answer 10

a substance made up of only one type of atom

Question 11

group

Answer 11

a column in the periodic table

Question 12

lattice

Answer 12

a repeating arrangement of atoms in a solid

Question 13

malleable

Answer 13

able to be hammered or pressed into shape without breaking

Question 14

metal

Answer 14

a shiny element that conducts heat and electricity

Question 15

mixture

Answer 15

a combination of substances that can be physically separated

Question 16

molecule

Answer 16

a group of atoms bonded together

Question 17

noble gas

Answer 17

an element that is highly non reactive, located in the last group of the periodic table

Question 18

non metal

Answer 18

an element that typically does not conduct heat or electricity

Question 19

non reactive

Answer 19

tending not to chemically interact with other substances

Question 20

period

Answer 20

a row in the periodic table

Question 21

periodic table

Answer 21

a grid arrangement of all known chemical elements

Question 22

pure substance

Answer 22

a single substance without anything mixed in