Part 3 Final Exam

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Name:

Part 3 Final Exam

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

Three examples of physical change are _____.

a.	boiling of water, bursting a balloon, and melting a candle
b.	burning of gasoline, rotting of an egg, and exploding fireworks
c.	freezing of water, evaporation of gasoline, and rusting a nail
d.	sawing of wood, crushing a can, and toasting a marshmallow

_____ is a substance.

a.	Lemonade	c.	Seawater
b.	Soil	d.	Steam

The color of ink is a _____.

a.	chemical change	c.	physical change
b.	chemical property	d.	physical property

Smoke is an example of a _____.

a.	colloid
b.	mixture
c.	solution
d.	substance
e.	suspension

_____ is another name for a homogeneous mixture.

a.	Liquid	c.	Substance
b.	Solution	d.	Suspension

When two or more substances are combined so each substance maintains its own properties, the result is _____.

a.	a chemical change	c.	an element
b.	a compound	d.	a mixture

_____ is NOT homogeneous.

a.	A compound	c.	A solution
b.	An element	d.	A suspension

Each inner energy level of an atom has maximum numbers of _____ it can hold.

a.	electrons	c.	quarks
b.	neutrons	d.	protons

Dot diagrams are used to represent _____.

a.	atomic numbers
b.	atomic mass
c.	isotopes
d.	outer electrons
e.	the structure of the nucleus

10.

Particles of matter that make up protons and neutrons are _____.

a.	electrons	c.	quarks
b.	isotopes	d.	atoms

11.

A chemical symbol represents the _____ of an element.

a.	name
b.	reaction
c.	group
d.	structure
e.	type

12.

Horizontal rows of the periodic table are called _____.

a.	clusters
b.	families
c.	groups
d.	periods
e.	quarks

13.

Atoms of the same element with different numbers of neutrons are called _____.

a.	isotopes
b.	metals
c.	metalloids
d.	radioactive
e.	transition elements

14.

A particle that moves around the nucleus is _____.

a.	an electron
b.	an ion
c.	a neutron
d.	a quark
e.	a proton

15.

Elements in Groups 3 through 12 of the periodic table are called _____.

a.	isotopes
b.	metalloids
c.	metals
d.	noble gases
e.	transition elements

16.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is _____.

a.	26
b.	30
c.	52
d.	56
e.	82

17.

In a chemical formula, the ratio of atoms in the compound is shown by numbers called _____.

a.	hydrates
b.	chemical symbols
c.	oxidation numbers
d.	subscripts
e.	superscripts

18.

A group of atoms that acts together as one charged atom is a _____.

a.	crystal	c.	negative ion
b.	molecule	d.	polyatomic ion

19.

The elements that make up a compound and the ratios of the atoms of those elements can be shown in a _____.

a.	chemical formula	c.	subscript
b.	chemical symbol	d.	superscript

20.

A chemical bond that occurs when atoms share electrons is _____ bond.

a.	a covalent	c.	a magnetic
b.	an ionic	d.	a polyatomic

21.

The name given to the combining ability of an atom is _____.

a.	atomic mass	c.	ionic number
b.	atomic number	d.	oxidation number

22.

The sum of the oxidation numbers in a neutral compound is _____.

a.	a negative number	c.	a positive number
b.	one	d.	zero

23.

The oxidation number of an atom is shown with a _____.

a.	negative number	c.	subscript
b.	positive number	d.	superscript

24.

Which of the following correctly shows the formula for a hydrate?

a.	H₂O	c.	MgSO₄(H₂O)₇
b.	H₂O₂	d.	MgSO₄ · 7H₂O

25.

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?

a.	2
b.	4
c.	6
d.	8
e.	10

26.

What kind of chemical bond is formed when electrons are transferred from atom to atom?

a.	covalent	c.	ionic
b.	hydrate	d.	magnetic

27.

What is the total number of atoms in the compound Ca(ClO₃)₂?

a.	2
b.	3
c.	5
d.	6
e.	9

28.

How many hydrogen atoms are present in one molecule of ammonium acetate, NH₄C₂H₃O₂?

a.	3
b.	4
c.	7
d.	11
e.	12

29.

What is the name of the compound with the formula NaCl?

a.	chlorine sodiate	c.	sodium chloride
b.	sodium chlorate	d.	sodium dichloride

30.

Why do the noble gases NOT form compounds readily?

a.	They have empty outer energy levels.
b.	They have no electrons.
c.	They have seven electrons in the outer energy levels.
d.	Their outer energy levels are completely filled with electrons.

31.

What is the ratio of potassium atoms to oxygen atoms in a binary compound made from these two elements?

a.	1:1
b.	1:2
c.	1:3
d.	2:1
e.	3:1

32.

What is the name of a binary compound made up of lithium and chlorine?

a.	chlorine lithiate	c.	lithium chloride
b.	chlorine lithium	d.	lithium chlorate

33.

Which of the following is the correct formula for magnesium nitrate?

a.	MgNO₃	c.	Mg(NO₃)₂
b.	Mg₂NO₃	d.	Mg₂(NO₃)₂

34.

What is the charge of phosphate in K₃PO₄?

a.	7-
b.	3-
c.	1+
d.	5+
e.	4+

35.

What is the correct name for K₂SO₄?

a.	potassium disulfide	c.	potassium sulfide
b.	potassium sulfate	d.	potassium(II) sulfate

36.

What is the correct formula for magnesium oxide?

a.	MgO	c.	Mg₂O₂
b.	MgO₂	d.	Mg₂O

37.

At room temperature, most metals are _____.

a.	gases	c.	radioactive
b.	liquids	d.	solids

38.

The process by which solid iodine particles change directly to a gas without first becoming a liquid is called _____.

a.	condensation
b.	evaporation
c.	ionization
d.	radioactivity
e.	sublimation

39.

A term that means "salt former" is _____.

a.	allotrope
b.	fluoride
c.	ionic
d.	metal
e.	halogen

40.

Different forms of the same element that have different properties because of different atom arrangements are called _____.

a.	allotropes
b.	carbons
c.	graphites
d.	halogens
e.	silicons

41.

Hydrogen is grouped with the alkali metals because it _____.

a.	does not readily form compounds	c.	is a gas
b.	has one electron in its outer energy level	d.	is a metal

42.

When hydrogen reacts with the active metals, it forms a chemical bond by _____.

a.	gaining one electron	c.	losing two electrons
b.	losing one electron	d.	sharing electrons

43.

The elements in Groups 3-12 of the periodic table are the _____.

a.	actinides
b.	alkaline earth metals
c.	alkali metals
d.	halogens
e.	transition elements

44.

A family of elements that has two electrons in its outer energy level is the _____.

a.	actinides
b.	alkaline earth metals
c.	alkali metals
d.	halogens
e.	transition elements

45.

Bromine is the only halogen and nonmetal that is normally a _____.

a.	gas	c.	semiconductor
b.	liquid	d.	solid

46.

The only metal that is a liquid at room temperature is _____.

a.	copper
b.	mercury
c.	silver
d.	sodium
e.	zinc

47.

Cobalt, iron, and nickel are metallic transition elements that are _____.

a.	gases	c.	magnetic
b.	liquids	d.	radioactive

48.

Three transition elements in Group 12 of the periodic table are _____.

a.	copper, silver, and gold	c.	mercury, zinc, and cadmium
b.	iron, nickel, and cobalt	d.	neon, helium, and xenon

49.

The only noble gas with fewer than eight electrons in its outer level is _____.

a.	helium	c.	radium
b.	neon	d.	xenon

50.

Elements that lie along the stair-step line of the periodic table are _____.

a.	liquids	c.	metalloids
b.	metals	d.	radioactive

51.

The appearance of solid metals can be described as _____.

a.	dull	c.	powdery
b.	glassy	d.	shiny

52.

A family of elements that contains the most reactive metals is the _____.

a.	actinides
b.	alkaline earth metals
c.	alkali metals
d.	transition elements
e.	noble gases