PT Vocabulary HW: Sanjana Adimulam PD:4

Question 1

Atom

Answer 1

The basic particles from which all elements are made.

Question 2

Nucleus

Answer 2

The central core of the atom

Question 3

Subatomic particle

Answer 3

Proton, Neutron, or Electron

Question 4

Proton

Answer 4

A positivity (+) charged particle that is part of the nucleus

Question 5

Atomic Mass Unit

Answer 5

Unit used to measure the masses of the particles in the nucleus of an atom. A proton has a mass of 1 amu

Question 6

Neutron

Answer 6

A small particle in the nucleus of an atom, with no charge. (neutral)

Question 7

Atomic Number

Answer 7

Number of protons in the nucleus of an atom

Question 8

Isotope

Answer 8

Atom that has the same number of protons as another atom of the same element but different number of neutrons

Question 9

Mass number

Answer 9

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

Question 10

Atomic Mass

Answer 10

The average mass of all isotopes of an element. (see mass number and isotope above)

Question 11

Electron

Answer 11

Negatively charged (-) particle that is found in an area outside the nucleus of an atom.

Question 12

Electron Cloud

Answer 12

Name for the space in which electrons are likely to be found outside the nucleus of an atom.

Question 13

Energy Level

Answer 13

The specific amount of energy an electron has.

Question 14

Periodic Table

Answer 14

A chart of the elements showing the repeating pattern of their properties

Question 15

Chemical Symbol

Answer 15

A one or two letter representation of an element

Question 16

Group

Answer 16

Elements in the same vertical column of the periodic table; group

Question 17

Family

Answer 17

Another name for the elements in vertical columns of the periodic table; group

Question 18

Period

Answer 18

A horizontal row of elements in the periodic table.

Question 19

Metal

Answer 19

A class of elements characterized by physical properties that include conductivity, luster, ductility, and malleability. (Tends to lose electrons)

Question 20

Luster

Answer 20

Shininess

Question 21

Conductivity

Answer 21

The ability of an object to transfer heat or electricity to another object

Question 22

Reactivity

Answer 22

The ease of speed with which an element combines, or reacts, with other elements and compounds

Question 23

Ductile

Answer 23

A term used to describe a material that can be drawn or pulled into a thin wire.

Question 24

Malleable

Answer 24

A term that describes a material that can be hammered into a thin sheet.

Question 25

Corrosion

Answer 25

The gradual wearing away of metal due to chemical reaction.

Question 26

Non-metal

Answer 26

An element that lacks most of the properties of a metal. Often has a dull surface, is brittle, breaks easily, and tends to gain electrons.

Question 27

Metalloid

Answer 27

An element that has characteristic of both metals and nonmetals.

Question 28

Alkali Metal

Answer 28

An element in Group 1 of the periodic table; elements have 1 valance electron

Question 29

Alkaline Earth Metals

Answer 29

An element in Group 2 of periodic table ; elements have 2 valance electrons

Question 30

Transition Metal

Answer 30

One of the elements in groups 3-12 of the periodic table

Question 31

Noble Gas

Answer 31

An element in Group 18 of the periodic table; elements have 8 valance electrons and are extremely unreactive.

Question 32

Particle accelerator

Answer 32

A machine that moves atomic nuclei at higher speeds until they crash into one another, sometimes forming heavier elements.

Question 33

Halogen

Answer 33

An element found in Group 17 of the periodic table; elements have 7 valance electrons

Question 34

Boron Family

Answer 34

Elements found in Group 13 of the periodic table; elements have 3 valance electrons

Question 35

Carbon Family

Answer 35

Elements found in Group 14 of the periodic table; elements have 4 valance electrons

Question 36

Nitrogen Family

Answer 36

Elements found in Group 15 of the periodic table; elements have 5 valance electrons

Question 37

Oxygen Family

Answer 37

Elements found in Group 16 of the periodic table; elements have 6 valance electrons