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Exam 1 practice

Total questions: 82

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

A solution is also a

(a)  

2.

Which of the following is/are metric units of mass?

i. pound

ii. gram

iii. ounce

iv. kilogram

v. centigram

a)

ii only

b)

iv only

c)

ii and iv

d)

i and iii

e)

ii, iv, and v

3.

The closeness of the set values obtained from repeated measurements of the same quantity?

a)

Precision

b)

Accuracy

4.

The closeness of a single measurement to its true value

a)

Precision

b)

Accuracy

5.

What is the law of conservation of mass?

(a)  

6.

Theory

a)

An observation of natural phenomenon carried out in a controlled matter so that the results can be duplicated and rational conclusions be made.

b)

A concise statement or mathematical equation about a fundamental relationship or regularity of nature

c)

A tentative explanation of some regularity of nature

d)

A tested explanation of a basic natural Phenomenon

7.

Hypothesis

a)

An observation of natural phenomenon carried out in a controlled matter so that the results can be duplicated and rational conclusions be made.

b)

A concise statement or mathematical equation about a fundamental relationship or regularity of nature

c)

A tentative explanation of some regularity of nature

d)

A tested explanation of a basic natural Phenomenon

8.

Law

a)

An observation of natural phenomenon carried out in a controlled matter so that the results can be duplicated and rational conclusions be made.

b)

A concise statement or mathematical equation about a fundamental relationship or regularity of nature

c)

A tentative explanation of some regularity of nature

d)

A tested explanation of a basic natural Phenomenon

9.

Experiment

a)

An observation of natural phenomenon carried out in a controlled matter so that the results can be duplicated and rational conclusions be made.

b)

A concise statement or mathematical equation about a fundamental relationship or regularity of nature

c)

A tentative explanation of some regularity of nature

d)

A tested explanation of a basic natural Phenomenon

10.
How many sig. fig. are in the number below:
350.540
a)
4
b)
5
c)
6
d)
7
11.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
12.
How many Significant Figures in the number below?
4.56 x 103
a)
5
b)
4
c)
6
d)
3
13.
How many significant figures does 10.1 cm have?
a)
1
b)
2
c)
3
d)
4
14.
How many significant figure in 0.007?
a)
4
b)
3
c)
1
d)
0
15.

The study of matter and its changes is called

a)

Biology

b)

Chemistry

c)

Physics

d)

None of the above

16.

Solids, liquids, and gases are three phases of matter that

a)

Have mass

b)

Take up space

c)

Are made up of atoms

d)

All of the above

17.

The equation of matter in a materiel is know as

(a)  

18.

Anything that occupies space and can be perceived by sense is know as

(a)  

19.

One of several different homogeneous materials present in the portion of matter under study is know as the

(a)  

20.

A material that can be separated by physical means into two or more substances is a

(a)  

21.
which is an example of an element
a)
CaCl
b)
FeO
c)
N
d)
NaCl
22.
Which group contains all compounds?
a)
C, N, O, B, BO
b)
F, Fe, Li, Fe, Ne
c)
XeH, OH, NaCl, CoFe
d)
N, Ne, LiFe, NeXe
23.

An _____________ is a pure substance with only one type of particle and can't be broken down into simpler substances. Gold and iron are examples.

a)

Element

b)

Atom

c)

Compound

24.

Shiny and conducts heat and electricity well.

a)

nonmetal

b)

metal

c)

metalloid

25.

Has properties of both metals and nonmetals. Good semiconductors for computers.

a)

metal

b)

nonmetal

c)

metalloid

26.
Heat and electricity are the two ways to take apart a compound.
a)
True
b)
False
27.

The smallest part of a compound is a(n)

a)

atom

b)

element

c)

molecule

28.

The negative part of an atom that spins around the outside of the atom.

a)

proton

b)

neutron

c)

Electron

29.

They are brittle and don't conduct electricity or heat very well.

a)

metal

b)

nonmetal

c)

metalloid

30.

Why can't you trust atoms?

a)

they are too small

b)

they make up everything!!!

31.
A chemical bond formed when 2 atoms share electrons
a)
ionic bond
b)
covalent bond
c)
ionic compound
d)
soap
32.
Formed when metals and nonmetals chemically bond to form a new substance; electrons are transferred from the metal to the nonmetal
a)
ionic bond
b)
covalent bond
c)
ionic compound
d)
ion
33.
A compound that consists of positive and negative ions
a)
proton
b)
ionic bond
c)
density (D)
d)
ionic compound
34.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
35.
All matter is made of what?
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
36.

A substance composed of two or more elements is known as a

(a)  

37.

A substance that can not be decomposed into a simpler substance is an

(a)  

38.

A ________ has a definite shape and takes up a definite amount of space.

a)

solid

b)

liquid

c)

gas

39.

A ________ has a definite volume, but it does not have a definite shape.

a)

solid

b)

liquid

c)

gas

40.

A ________ has no definite shape or volume.

a)

solid

b)

liquid

c)

gas

41.

A mixture that is uniform in all its properties and is also known as a solution

a)

Homogeneous

b)

Heterogeneous

42.

A mixture that consists of physically distinct parts, each with different properties

a)

Homogeneous

b)

Heterogeneous

43.
Shininess is an example of a _ property.
a)
physical
b)
chemical
c)
physical and chemical
44.
Flammability is an example of this kind of property.
a)
physical
b)
chemical
c)
physical and chemical
45.
Melting point of wax is a _ property.
a)
physical
b)
chemical
46.
Ability to rust is an example of a _ property.
a)
physical
b)
chemical
c)
physical and chemical
47.

Characteristics that can be observed with out changing its chemical identity EX. Color or shiny

a)

Chemical Properties

b)

Physical Properties

48.

Characteristics of a materiel involving its chemical change

a)

Chemical Properties

b)

Physical Properties

49.
How would you write 564,000,000 in scientific notation?
a)
5.64 x 10-7
b)
5.64 x 106
c)
5.64 x 108
d)
56.4 x 107
50.
Which of the following numbers is the SMALLEST?
Cual numero es mas chico?
a)
8.7 x 103
b)
3 x 104
c)
1.3 x 108
d)
9 x 102
51.

How would you write 0.0005 in scientific notation?

a)

50 x 10-5

b)

5 x 10-4

c)

5 x 103

d)

.5 x 103

52.

How would you write 0.0005 in scientific notation?

a)

50 x 10-5

b)

5 x 10-4

c)

5 x 103

d)

.5 x 103

53.

Kelvin to Celsius

(a)  

54.

Fahrenheit to Celsius

(a)  

55.

Celsius to Fahrenheit

(a)  

56.

Celsius to Kelvin

(a)  

57.

Smallest piece of an element that is capable of independent existence.

a)

Molecule

b)

Formula Unit

c)

Ion

d)

Atom

58.

Atoms of the same element with different numbers of neutrons.

a)

Formula Unit

b)

Isotopes

c)

Isomers

d)

Protons

59.
Atomic mass - Atomic Number =
a)
protons
b)
neutrons
c)
electrons
d)
Average Mass
60.
An element is defined by its number of 
a)
protons
b)
electrons
c)
neutrons
d)
protons + electrons
61.
A cation....
a)
gains electrons
b)
loses electrons
c)
loses protons
d)
is a Spanish word for a cat 
62.
An anion....
a)
gains electrons 
b)
loses electrons
c)
loses protons
d)
is neutral 
63.
The potassium (K) ion is a(n)....
a)
anion 
b)
cation 
c)
neutral ion 
d)
isotope 
64.
C-12 and C-14 are known as...
a)
Ions
b)
Isotopes
c)
Protons
d)
explosives 
65.
Which of the subatomic particles is the lightest
a)
all have the same mass
b)
protons 
c)
neutrons 
d)
electrons
66.
Which of the subatomic particles is the heaviest?
a)
electrons 
b)
protons 
c)
neutrons 
d)
protons and neutrons have equal mass
67.

when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers. is known as what law?

(a)  

68.
a)
12
b)
7
c)
8
d)
14
69.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
70.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
71.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
72.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
73.

Ions are formed when atoms gain or lose ___.

a)

electrons

b)

protons

c)

neutrons

d)

atomic mass

74.

If a potassium atom lost one electron, what would be the symbol for that ion?

a)
b)
c)
d)
75.

Which element in period 4 has the highest electronegativity?

a)

potassium

b)

calcium

c)

copper

d)

bromine

76.

The common charge on an atom in group 17 would be....

a)

+1

b)

+7

c)

-7

d)

-1

e)

17

77.

What type of elements are malleable and ductile?

a)

noble gases

b)

nonmetals

c)

metals

d)

halogens

78.

Name the compound: MgCl2

a)

magnesium chloride

b)

magnesium dichloride

c)

monomagnesium chloride

d)

manganese chloride

79.

compounds made up of ions that form charged particles when an atom (or group of atoms) gains or loses electrons. is known as

(a)  

80.

consists of molecules whose formula represents the actual number of atoms bonded together in the molecule. is known as

(a)  

81.

Name the compound: Cu(NO3)2

a)

copper nitrate

b)

copper(II) nitrate

c)

copper(II) dinitrate

d)

copper dinitrogen hepaoxide

82.

Name the compound: CF4

a)

carbon tetrafluoride

b)

monocarbon tetrafluoride

c)

carbon fluoride

d)

chlorine tetrafluoride

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