Physical Science -Unit 6- Atomic Structure & Periodic Table SPS1.a.-c.

question

Atomic number
Atomic number
answer

the number of protons (+) in the nucleus of an atom of a given element and equal to the number of electrons (-) surrounding the nucleus.
question

Atomic Mass or Mass Number
Atomic Mass or Mass Number
answer

Sum of the number of protons and neutrons
question

How to find the number of neutrons in an atom?
How to find the number of neutrons in an atom?
answer

Atomic mass number – Atomic number
question

Neutrons
answer

A neutrally charged subatomic particles in the nucleus of an atom
question

Protons
answer

A positively charged subatomic particle in the nucleus of an atom
question

Isotopes
answer

Atoms of the same element with different numbers of neutrons
question

Valence electrons
Valence electrons
answer

the number of electrons in the outermost energy level
question

Atomic structure
answer

Atoms are made of a nucleus of protons and neutrons orbited by electrons
question

Electron cloud
Electron cloud
answer

a region around the nucleus of an atom where electrons are likely to be found
question

The number of neutrons in a U-238 isoptope
answer

146
question

The number of electron in an atom of chlorine
The number of electron in an atom of chlorine
answer

17
question

The number of protons in an atom of chlorine.
The number of protons in an atom of chlorine.
answer

17
question

The number of neutrons in an atom of chlorine
answer

18
question

Period
answer

A horizontal row of elements in the periodic table – determines how many electron energy levels an atom has
question

Group or Chemical Family
answer

A vertical column on the periodic table which share a common number of valence electrons and react the same
question

Atom
Atom
answer

Smallest particle of an element
question

Ion
answer

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
question

Electrons
answer

Negatively charged particles found outside the nucleus
question

Metals
answer

Elements that have a shiny or metallic luster, are malleable, ductile, and are good conductors of heat and electricity
question

Nonmetals
answer

Elements, mostly gases, or dull and brittle solids that that are poor conductors of heat and electricity.
question

Metalloids
answer

Elements along the staircase. Have properties of both metals and nonmetals. Ex: Silicon
question

State the number of neutrons in each of these Lithium isotopes – Li-6, Li-7, & Li-8
answer

3, 4, & 5
question

Gold (Au) forms two common ions – how many electrons does each have: Au 1+ and Au 3+
Gold (Au) forms two common ions - how many electrons does each have: Au 1+ and Au 3+
answer

Au 1+ has 78 electrons, Au 3+ has 76 electrons

Get instant access to
all materials

Become a Member