Chapter 10 and 11

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Name:

Chapter 10 and 11

Modified True/False

Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence or statement true.

The properties of a compound are the same as the properties of the elements making up the compound. _______________

Hazardous materials are poisonous if they are corrosive. _______________

Gasoline is a hazardous compound because it is flammable. _______________

Battery acid and bleach are examples of corrosive compounds. _______________

Particles formed from the covalent bonding of atoms are called ions. _______________

Molecules are neutral. _______________

A term that means "without water" is anhydrous. _______________

When an atom gains or loses electrons, the charged particle that results is called a molecule. _______________

The formula SO₄^2- stands for ammonium. _______________

Multiple Choice

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

10.

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

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

11.

Dot diagrams are used to represent _____.

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

12.

A chemical symbol represents the _____ of an element.

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

13.

Horizontal rows of the periodic table are called _____.

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

14.

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

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

15.

A particle that moves around the nucleus is _____.

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

16.

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

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

17.

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

18.

The color of ink is a _____.

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

19.

_____ is another name for a homogeneous mixture.

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

20.

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

21.

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

22.

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

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

23.

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

24.

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

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

25.

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

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

26.

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

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

27.

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

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

28.

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

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

29.

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

30.

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

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

31.

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

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

32.

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

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

33.

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

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

34.

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.

35.

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

36.

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

37.

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

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

38.

What is the charge of phosphate in K₃PO₄?

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

39.

What is the correct name for K₂SO₄?

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

40.

What is the correct formula for magnesium oxide?

a.	MgO	c.	Mg₂O₂
b.	MgO₂	d.	Mg₂O

Matching

Match the labeled parts of Figure 9-1 to the correct terms below.

41.

pure element

42.

mixture of two elements

43.

pure compound

44.

mixture of two compounds

45.

mixture of a compound and an element

Short Answer

46.

Explain the rules followed to name a binary compound from its formula.

47.

Write the names for the following compounds: CaBr₂, CuCl, MgS.

48.

Write the formula for each of the following compounds: copper(I) sulfide, calcium chloride, calcium oxide.

49.

List the elements that form water, and give one physical property and one chemical property for the elements that are different from those of water.

50.

Explain the difference among corrosive, flammable, and toxic compounds.