Chemistry glossary

Question 1

is the science in which substances are examined to find out what they are made of, how they act, etc

Answer 1

Chemistry

Question 2

horizontal rows on the periodic table

Answer 2

period

Question 3

the characteristics that we can use the describe or identify different substances

Answer 3

Chemical properties

Question 4

the transition of a substance to a solid state.

Answer 4

freezing

Question 5

is a solution that has particles, yet are still able to remain evenly distributed throughout the solution

Answer 5

colloid

Question 6

the building blocks of elements

Answer 6

atoms

Question 7

where tiny particles of one substance are held within another to create a cloudy mixture

Answer 7

suspension

Question 8

the transition of a substance directly from a solid to gas state

Answer 8

sublimation

Question 9

the simplest building block of matter

Answer 9

element

Question 10

these mixtures are heterogeneous. they have a non-uniform appearance and are easily separated using simple mechanical means

Answer 10

mechanical mixture

Question 11

in the nucleous the positive charge

Answer 11

proton

Question 12

are also found in the nucleolus, but have no charge

Answer 12

neutron

Question 13

the transition of a substance from gas to liquid state

Answer 13

condensation

Question 14

orbit around the nucleus and have a negative charge

Answer 14

electron

Question 15

the transition of a substance from solid to liquid state

Answer 15

melting

Question 16

vertical columns of the periodic table

Answer 16

families

Question 17

either a single capital letter OR a capital letter followed by a lower case letter that represents each element

Answer 17

chemical symbol

Question 18

the number of protons in the nucleus

Answer 18

atomic number

Question 19

a combination of symbols representing a particular compound

Answer 19

chemical formula

Question 20

represents the sum of protons and neutrons in an atom

Answer 20

atomic mass

Question 21

anyhting that has volume (takes up space) and has mass

Answer 21

matter

Question 22

pure substances that are made up of 2 or more different elements

Answer 22

compound

Question 23

these mixtures are homogeneous. they have a uniform appearance throughout

Answer 23

solution

Question 24

the transition of a substance from a liquid to gas state

Answer 24

evaporation

Question 25

the components of the mixture are not uniform or have parts with different properties

Answer 25

heterogeneous

Question 26

consisting of all parts of the same kind

Answer 26

homogeneous