Unit 1

Question 1

Chemistry

Answer 1

A science that deals with the structure and properties

Question 2

Noble Gas

Answer 2

Group 18 in the periodic table with a full outer shell

Question 3

Atomic Number

Answer 3

Number of protons in the nucleus in an atom

Question 4

Nuclear Fusion

Answer 4

Reaction in which the nuclei of one atom combines with the nuclei of another to form a larger nuclei

Question 5

Isotope

Answer 5

Atoms with same number of protons but not the same nunber of neutrons

Question 6

Significant Figure

Answer 6

The figure of a number that express a magnitude to a specified degree of accuracy

Question 7

Density

Answer 7

Mass per unit of volume

Question 8

Metalloid

Answer 8

Element with the properties of both metals and nonmetals

Question 9

Mass Number

Answer 9

Sum of the protons and neutrons in the nucleus of an atom

Question 10

Electron Cloud

Answer 10

System of electrons surrounding the nucleus of an atom

Question 11

Atom

Answer 11

Smallest particle of a substance that can exist by itself

Question 12

Precision

Answer 12

The quality of being exact

Question 13

Accuracy

Answer 13

The ability to work without mistakes

Question 14

Scientific Notation

Answer 14

Method that expresses the number multiplied by 10 and the appropriate power

Question 15

Percent Error

Answer 15

Experimental value minus the accepted value, divided by the accepted value and then multiplied by 100

Question 16

Quantitative Data

Answer 16

Numerical measurements rather than its words

Question 17

Qualitative Data

Answer 17

Data in words rather than in numbers

Question 18

Specific Heat

Answer 18

The heat required to raise the temperature of the mass of a given substance by given amount

Question 19

Precipitate

Answer 19

A solid that is produced by a chemical reaction in solution