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Biology Chapter 1

Total questions: 68

Worksheet time: 30mins

Name
Class
Date
1.
Anything that has mass and takes up space.
a)
matter
b)
volume
c)
pure
d)
element
2.
The basic unit of matter--made of protons, neutrons, and electrons.
a)
atom
b)
element
c)
compound
d)
substance
3.
Pure substances made of only one kind of atom.
a)
element
b)
atom
c)
compound
d)
substance
4.
Ability to do work or cause change.
a)
energy
b)
temperature
c)
entropy
5.
A measure of the speed (average kinetic energy) of the particles in a sample of matter--relative hotness or coldness.
a)
temperature
b)
energy
c)
entropy
6.
A measure of how much the energy of a system is dispersed or spread out.
a)
entropy
b)
temperature
c)
energy
7.
Changes that do not change the identity of the matter--changes affecting the form of a chemical substance, but not its chemical composition.
a)
physical changes
b)
chemical changes
c)
phase changes
8.
Changes that completely transform the identity of matter--process by which a substance becomes a new substance (goes through a chemical reaction, burning, rusting).
a)
chemical changes
b)
physical changes
c)
phase changes
9.
An attractive force acting between atoms--stored chemical energy holding the atoms together.
a)
bond
b)
adhesion
c)
cohesion
10.
A pure substance made of two or more elements chemically combined.
a)
compound
b)
mixture
11.
A neutral group of atoms that are joined together by one or more chemical bonds (may be atoms from one element or two different elements--no ions formed, electrons are shared).
a)
molecule
b)
formula unit
c)
ion
12.

The process that takes place when a solvent is mixed with a solute to make a solution.

a)

dissolving

b)

resolving

c)

stirring

13.
A compound that forms hydrogen ions (H+) in water; measures 0.1 to 6.9 on pH scale.
a)
acid
b)
base
c)
solution
14.
Any compound that increases the number of hydroxide ions (OH-) and other anions when dissolved in water; measures 7.1 to 14 on pH scale.
a)
base
b)
acid
c)
solution
15.
The movement of particles from regions of higher density to areas of lower density
a)
diffusion
b)
effusion
c)
confusion
16.
The starting substances in a chemical reaction.
a)
reactants
b)
products
c)
catalyst
d)
inhibitor
17.
The elements or compounds produced by a chemical reaction.
a)
products
b)
reactants
c)
answers
d)
inhibitor
18.
A substance that speeds up a reaction but does not get used up in the reaction (lowers the activation energy needed for the reaction to occur).
a)
catalyst
b)
product
c)
reactant
d)
inhibitor
19.
Catalysts for specific chemical reactions in living things.
a)
enzymes
b)
compounds
c)
molecules
d)
inhibitor
20.
Having an uneven distribution of charge
a)
polar
b)
unbalanced
c)
non-polar
21.
Attraction between molecules of the same substance.
a)
cohesion
b)
adhesion
22.
An attraction between molecules of different substances (both polar).
a)
adhesion
b)
cohesion
23.
Compounds containing carbon covalently bonded with other elements.
a)
organic compounds
b)
ionic compounds
c)
molecular compounds
24.
Organic compounds containing carbon, hydrogen, and oxygen; ex. sugars and starches.
a)
carbohydrates
b)
lipids
c)
proteins
d)
amino acids
25.
Nonpolar molecules that include fats, oils, and cholesterol and do not dissolve in water.
a)
lipids
b)
carbohydrates
c)
proteins
d)
amino acids
26.
The building blocks of proteins
a)
amino acids
b)
lipids
c)
carbohydrates
d)
proteins
27.
Basic units of DNA/RNA molecule, composed of a sugar, a phosphate, and one of 4 DNA bases
a)
nucleotides
b)
rip tide
c)
amino acid
d)
protein
28.
A substance that interferes with the action of a catalyst to slow down or stop a reaction.
a)
inhibitor
b)
catalyst
c)
reactant
d)
product
29.

Temperature is a measurement of

a)

the amount of matter in an object

b)

how much energy an object has

c)

the amount of chemicals

d)

the speed of moving particles

30.

A compound held together by opposite electrical charges in a(n)

a)

covalent

b)

ionic

c)

molecular

d)

electrical

31.

Covalent compound form when atoms ______________ electron

a)

share

b)

gain

c)

lose

d)

exchange

32.

The attraction of one water molecule for another is known as

a)

cohesion

b)

adhesion

c)

polarity

d)

none of these

33.

organic compounds all contain the element

a)

hydrogen

b)

carbon

c)

nitrogen

d)

oxygen

34.

The main purpose of carbohydrates for living things is for

a)

fuel

b)

storage

c)

information

d)

body coverings

35.

When a peptide bond forms between two amino acids, ____ is released.

a)

water

b)

carbon dioxide

c)

an amine group

d)

glucose

36.

Chemistry is the study of matter and the charges it experiences

a)

TRUE

b)

FALSE

37.

The smallest part of a covalent compound is a formula unit

a)

TRUE

b)

FALSE

38.

Brownian motion is motion caused by the collision between particles

a)

TRUE

b)

False

39.

A chemical equation shows both _______ and _______

a)

product

b)

particles

c)

elements

d)

reactant

40.

A thorough understanding of chemistry and _________ worldview are necessary to know how to properly use chemicals, such as the use of medicine.

a)

naturalistic

b)

uniformitarianism

c)

biblical

d)

secular

41.

The intersection between hydrogen atoms on adjacent molecules is known as _____ bonding.

a)

atom

b)

hydrogen

c)

hydroxide

d)

nuclear

42.

a substance that produces hydrOXIDE ions in a solution

a)

acid

b)

base

c)

molecule

d)

compund

43.

the physical stuff that makes up the universe

a)

matter

b)

element

c)

atom

d)

entropy

44.

the smallest part of a covalent compound

a)

compound

b)

molecule

c)

atom

d)

element

45.

the smallest individual part of an element

a)

matter

b)

element

c)

atom

d)

molecule

46.

a pure substance made of only one kind of atom

a)

matter

b)

element

c)

atom

d)

molecule

47.

a substance that produced hydroGEN ions in solution

a)

acid

b)

bace

c)

atom

d)

entropy

48.

the tendency of energy to spread out

a)

entropy

b)

base

c)

element

d)

compount

49.

running a tree through a wood chipper

a)

physical

b)

chemical

50.

a popsicle melting in the sun

a)

physical

b)

chemical

51.

using gasoline to power a lawn mower

a)

physical

b)

chemical

52.

molding cheese

a)

physical

b)

chemical

53.

making a paper airplane

a)

physical

b)

chemical

54.

Since animals can't make their own energy, they require _____ energy.

a)

physical

b)

chemical

c)

nuclear

d)

thermodynamic

55.

Enzymes help a chemical reaction proceed by ____ the activation site.

a)

lowering

b)

raising

c)

steadying

d)

changing

56.

An inhibitor can decrease the activity of an enzyme by binging to the enzyme's _________.

a)

activation site

b)

docking site

c)

molecule site

d)

inhibitor site

57.

Because water molecules have regions of asymmetric charge, they are considered___ molecules

a)

rude

b)

polar

c)

atrative

d)

nice

58.

Carbohydrates, lipids, and proteins, and nucleotides are all ____ compounds

a)

organic

b)

polar

c)

chemical

d)

physical

59.

when a peptide bond forms between to amino acids, what is released?

a)

CH4

b)

CO2

c)

H2O

d)

K2

60.

a compound that is held together by opposite electrical charges is a

a)

ionic compound

b)

shared compound

c)

covalent compound

d)

short compound

61.

which is not a reason why carbon is important

a)

it forms graphite and diamonds

b)

it forms chains and rings

c)

it can bond with itself

d)

it can form up to four bonds

62.

the smallest part of a covalent bond is a formula unit

a)

true

b)

false

63.

the interaction between hydrogen atoms on adjacent molecules is hydrogen bonded

a)

true

b)

false

64.

the Brownian motion is caused by the collision of particles

a)

true

b)

false

65.

enzymes aid in chemical reactions by doing what to the energy required for activation

a)

gaining

b)

exchanging

c)

using

d)

lowering

66.

inhibitors bind at the what site to decrease activity

a)

inhibitor site

b)

active site

c)

gaining site

d)

lac operon

67.

water is considered to be polar because it has ______

a)

covalent charge

b)

shared charge

c)

asymmetric charge

d)

ionic charge

68.

what are Carbohydrates, proteins, lipids, and nucleotides considered to be?

a)

organic compounds

b)

inorganic compounds

c)

energy compounds

d)

edible compounds

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