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Biology test #2

Total questions: 94

Worksheet time: 1hrs 8mins

Name
Class
Date
1.
Matter is anything that takes up space
a)
True
b)
False
2.
Matter has to main properties mass and volume
a)
True
b)
False
3.
Mass measueres the amount of matter in an object
a)
True
b)
False
4.
Volume is the amount of space that matter takes up
a)
True
b)
False
5.
Homogeneous mixtures...
a)
Have a uniform composition. Once the diferent components are mixed, they cannot be identified or separated from each other
b)
Have an irregular composition. They are formed by two or more elements that do not combine with each other. The different components maintain their characteristics.
6.
Heteregoneous mixtures...
a)
Have a uniform composition. Once the diferent components are mixed, they cannot be identified or separated from each other
b)
Have an irregular composition. They are formed by two or more elements that do not combine with each other. The different components maintain their characteristics.
7.
Something that takes up space and has mass.
a)
volume
b)
matter
c)
mass
d)
density
8.
The amount of space something takes up
a)
density
b)
volume
c)
mass
d)
matter
9.
Which statement about atoms is true?
a)
They are all the same
b)
All substances are made of just one kind
c)
You can see them with your eyes
d)
They are too small to be seen with an ordinary microscope
10.
I am the smallest whole particle of matter. 
a)
atom
b)
compound
c)
molecule
d)
mixture
11.

I am two or more atoms chemically bonded.

a)

atom

b)

neutron

c)

molecule

d)

mixture

12.
Which 2 kinds of particles make up the nucleus of an atom?
a)
electrons and neutrons
b)
electrons and nuclei
c)
protons and neutrons
d)
protons and kryptons
13.
Which particle carries a negative charge?
a)
protons
b)
neutrons
c)
electrons
14.

The smallest particles of matter are called

a)

neutrons

b)

atoms

c)

electrons

d)

protons

15.

Which particles are contained in the nucleus of an atom?

a)

neutrons and electrons

b)

protons and neutons

c)

protons, neutron, and electrons

16.

which subatomic particles have no charge (they are neutral)?

a)

protons

b)

neutrons

c)

electrons

17.

What is a subatomic particle with a positive charge?

a)

Proton

b)

Neutron

c)

Electron

18.

What are kinds of subatomic particles?

a)

Protons neutrons, and electrons

b)

the nucleus

c)

the smallest particles of matter

19.

smallest part of an element that has all of the properties of that element.

a)

nucleus

b)

atom

c)

mineral

d)

gem

20.

What is the area surrounding the nucleus that contains negatively charged particles called?

a)

electron cloud

b)

center

c)

outer region

21.

Which subatomic particles are much smaller than the others and have a negative charge?

a)

protons

b)

neutrons

c)

electrons

22.
From the diagram, which particles are indicated with the arrow?
a)
electrons and protons
b)
protons and neutrons
c)
electrons and neutrons
d)
photons and nucleons
23.
These particles orbit around the nucleus of an atom.  What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
24.
In the center of the atom is something called _____
a)
the kernel
b)
the cell
c)
the nucleus
d)
the focal point
25.
What are the names of the particles in the nucleus?
a)
protons and neutrons
b)
protons and electrons
c)
photons and neutrons
d)
nucleons and protons
26.
Near the outside of an atom, you'd find _____
a)
electrons
b)
protons
c)
neutrons
d)
photons
27.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

28.

Sweet Tea, everything is mixed evenly and looks the same.

a)

Heterogeneous Mixture

b)

Homogeneous Mixture

29.

H2 is an example of a(n)...

a)

Element

b)

Compound

c)

Molecule

d)

Heterogeneous Mixture

30.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

31.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

32.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

33.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

34.
a)

Homogeneous Mixture

b)

Heterogeneous Mixture

35.

2 or more different elements that are bonded together is called...

a)

A. element

b)

B. compound

c)

C. mixture

d)

D. solution

36.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
37.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
38.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
39.

Jay combines water, sugar, and lemon juice to form lemonade. What type of substance was made?

a)

Element

b)

Molecule

c)

Mixture

40.
Which of the following is an example of a heterogenous mixture?
a)
soap
b)
a salad with lettuce, olives, and tomatoes
c)
cup of coffee
d)
water
41.
Which of the following selections are the different types of mixtures?
a)
heterogenous, homogenous
b)
acid, base
c)
metal, nonmetal
d)
element, compound
42.
This type of mixture looks the same throughout. 
a)
Homogenous
b)
Heterogeneous
43.
  What is a pure substance made of two or more elements that are chemically combined called?
a)
A. element
b)
B. compound     
c)
C. mixture
d)
D. solution
44.
_____ - made up of two or more elements.
a)
Element
b)
Compound
45.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
46.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
47.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
48.
What is water (H20)?
a)
element
b)
compound
c)
mixture
49.
What is gold (Au)?
a)
element
b)
compound
c)
mixture
50.
What is sugar (C6H12O6)?
a)
element
b)
compound
c)
mixture
51.

Valence electrons are found

a)

in the innermost energy level of an atom

b)

in the middle energy levels of an atom

c)

in the outermost energy levels of an atom

52.
How are covalent bonds formed?
a)
Sharing of electrons
b)
Transfer of electrons
53.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
54.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
55.
Two or more atoms held together by a chemical bond is called what?
a)
A molecule
b)
A molecure
56.
Which of these is not a real bond in chemistry?
a)
James
b)
Ionic
c)
Covalent
57.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
58.
What two elements make up water?
a)
Helium and oxygen
b)
Hydrogen and oxygen
c)
helium and carbon
d)
oxygen and carbon
59.

When water and other liquids stick together to form drops or thin films called ________________.

a)

adhesion

b)

capillary action

c)

cohesion

d)

surface tension

60.
molecule in which opposite ends have opposite electric charges
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
61.
Why does ice float?
a)
As water freezes, it expands and its density decreases.
b)
As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
c)
As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
d)
As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.
62.
The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form
a)
less polar
b)
more polar
c)
less dense
d)
more dense
63.
Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
a)
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
c)
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
64.
A general definition of cohesion is the attraction of:
a)
particles of the same substance
b)
particles of a different substance
c)
particles of both the same and different substances
d)
particles of neither the same or different substances
65.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
66.

Capillary Action

a)

The property of water that allows ice to float on the surface of liquid water

b)

The property of water that allows it to dissolve polar substances

c)

When water molecules stick to other surfaces

d)

The property of water that allows water to move up a thin tube (or the stem of a plant) by itself

67.

What property of water allows water to flow against gravity?

a)

Polarity

b)

Cohesion

c)

Capillary Action

d)

Adhesion

68.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
69.
A molecule with electrically charged areas is called a _______________.
a)
magnet
b)
polar molecule
c)
solution
d)
electrical molecule
70.
Which end of the water molecule has a slightly positive charge?
a)
the oxygen end
b)
the hydrogen end
c)
both ends are slightly positive
d)
neither end is positive
71.

Water is considered a ______ molecule, because it has positively and negatively charged regions.

a)

intermolecular

b)

nonpolar

c)

polar

d)

dense

72.

The following properties are all demonstrated by water, except ____.

a)

Adhesion

b)

Low heat capacity

c)

Solvent

d)

Cohesion

73.
Which is NOT a unique property of water?
a)
Frozen water floats on liquid water.
b)
Water covers most of the Earth’s surface and retains a large amount of heat.
c)
Water molecules stick to each other through hydrogen bonds.
d)
Water cools very rapidly.
74.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
75.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
76.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
77.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
78.
Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.
a)
lower
b)
higher
c)
the same
d)
none of the above
79.

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

a)

Both of the solution are Bases

b)

Both of the solution are Acids

c)

The Baking soda is an acid and the Bleach is a base

d)

The baking soda is a base and the Bleach is an Acid.

80.

A base is a substance

a)

That releases OH- ions when dissolved in water

b)

That releases H+ ions when dissolved in water

c)

Does not release any ions when dissolved in water

d)

None of the above

81.
On the pH scale higher numbers indicate
a)
acids
b)
bases
82.
If you have a substance with a pH of 7.1 it is a(n).....
a)
Acid
b)
base
83.

An acid

a)

is a substance that releases H+ ions when dissolved in water

b)

is a substance that does not release any ions when dissolved in water

c)

is a substance that releases OH- when dissolved in water

d)

releases an equal amount of OH- and H+ ions when dissolved in water

84.

Water has a neutral because

a)

it has more H+ ions than OH-

b)

it has more OH- ions than H+

c)

it does not produce any ions

d)

it has an equal amount of H+ and OH- in solution

85.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
86.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
87.
A solution has a pH of 7.0.  What would happen to the pH if H ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
88.
Monomers combine to form ________ through the process of ________.
a)
polymers; hydrolysis
b)
polymers; dehydration synthesis
c)
monomers; hydrolysis
d)
monomers; dehydration synthesis
89.
Connects monomers to form a polymer
a)
Dehydration synthesis
b)
hydrolysis
90.
Produces water as a by-product
a)
Dehydration synthesis
b)
Hydolysis
91.
Breaks up polymers, forming monomers
a)
dehydration synthesis
b)
hydrolysis
92.
The process of removing water in order to form a bond between monomers is called....
a)
Dehydration Synthesis
b)
Hydrolysis
93.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
94.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis

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