Atomic SystemsAtomic Systems

ReviewReview

__________________ is __________________ is anything that has mass and anything that has mass and

takes up spacetakes up space

mattermatter

The tiniest particles of which all The tiniest particles of which all things are made are things are made are

____________.____________.

atomsatoms

The basic structural The basic structural components of the typical atom components of the typical atom are ___________, _________, are ___________, _________,

and _____________. and _____________.

Protons, neutrons, electronsProtons, neutrons, electrons

Protons and neutrons comprise Protons and neutrons comprise the _____________ of an atom. the _____________ of an atom.

nucleusnucleus

______________ have a ______________ have a positive charge. positive charge.

protonsprotons

_____________ have a _____________ have a negative charge.negative charge.

electronselectrons

_______________ have no _______________ have no charge at all.charge at all.

neutronsneutrons

An ______________ is a form An ______________ is a form of matter that is made up of one of matter that is made up of one

type of atom type of atom

elementelement

The number of __________ in The number of __________ in an atom of an element an atom of an element

determine the type of element.determine the type of element.

protonsprotons

A(n) _____________ of an A(n) _____________ of an element contains a different element contains a different

number of neutrons.number of neutrons.

isotopeisotope

The ___________________ The ___________________ organizes the elements by organizes the elements by

atomic mass.atomic mass.

Periodic tablePeriodic table

Every element is represented by Every element is represented by its __________________.its __________________.

Chemical symbolChemical symbol

The __________________ The __________________ indicates the number of protons indicates the number of protons

and electrons in element.and electrons in element.

Atomic numberAtomic number

The ________________ of an The ________________ of an element tells the weighted element tells the weighted

average mass of its isotopes.average mass of its isotopes.

Atomic massAtomic mass

Use the information on the left Use the information on the left to determine the chemical to determine the chemical symbol for the element.symbol for the element.

66

CCCarbonCarbon

12.010712.0107

CC

How many protons are How many protons are contained in one atom of contained in one atom of

carbons?carbons?

66

CCCarbonCarbon

12.010712.0107

66

How many neutrons are How many neutrons are contained in one atom of contained in one atom of

carbon?carbon?

66

CCCarbonCarbon

12.010712.0107

6.01076.0107

How many electrons are How many electrons are contained in one atom of contained in one atom of

carbon?carbon?

66

CCCarbonCarbon

12.010712.0107

66

The periods of the periodic table The periods of the periodic table tell the number of tell the number of

_____________ an element _____________ an element has.has.

shellsshells

_____________ are malleable _____________ are malleable and ductile, generally shiny and and ductile, generally shiny and

good conductors of heat and good conductors of heat and electricity, and most are solid at electricity, and most are solid at

room temperature. room temperature.

metalsmetals

________________ have ________________ have characteristics of both metals characteristics of both metals

and nonmetals. and nonmetals.

metalloidsmetalloids

______________ are usually ______________ are usually dull in appearance, most are dull in appearance, most are poor conductors of heat and poor conductors of heat and

electricity, and many are gases electricity, and many are gases at room temperature. at room temperature.

nonmetalsnonmetals

Two or more atoms of the Two or more atoms of the different elements may combine different elements may combine

to form a ______________. to form a ______________.

compoundscompounds

What is the chemical formula for What is the chemical formula for salt?salt?

NaClNaCl

The chemical formula, HThe chemical formula, H22OO2 2

contains what two elements?contains what two elements?

Hydrogen and OxygenHydrogen and Oxygen

The chemical formula, NaHCOThe chemical formula, NaHCO33

contains how many atoms of contains how many atoms of oxygen?oxygen?

33

The chemical formula, CaCOThe chemical formula, CaCO33

contains how many atoms of contains how many atoms of calcium?calcium?

11

A chemical formula represents a A chemical formula represents a _____________ reaction of the _____________ reaction of the

elements involved.elements involved.

chemicalchemical

The properties of a The properties of a ___________ are different from ___________ are different from those of the elements it is made those of the elements it is made

from.from.

compoundcompound

When two or more substances When two or more substances (elements or compounds) come (elements or compounds) come

together but don’t combine to together but don’t combine to make a new substance, a make a new substance, a ____________ results. ____________ results.

mixturemixture

_________________ mixtures _________________ mixtures are the same throughout.are the same throughout.

homogeneoushomogeneous

You can see the different parts You can see the different parts in a _____________ mixture.in a _____________ mixture.

The compounds in yellow represent which The compounds in yellow represent which part of the chemical equation?part of the chemical equation?

SOSO33 + + HH22OO HH22SOSO44

reactantsreactants

The compounds in red represent which part The compounds in red represent which part of the chemical equation?of the chemical equation?SOSO33 + + HH22OO HH22SOSO44

productproduct

Is the following chemical Is the following chemical equation balanced?equation balanced?

2H2H33AsOAsO44 → As → As22OO55 + H + H22OO

nono

Don’t forget to study common Don’t forget to study common compounds, balancing chemical compounds, balancing chemical

equations, and predominant equations, and predominant earth elements.earth elements.