NEW
Font size
S
M
L
XL
WorksheetsChapter 6 Test Review
Total questions: 40
Worksheet time: 32mins
Name
Class
Date
1.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
2.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
3.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
4.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
5.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
6.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
7.
A compound that consists of positive and negative ions
a)
proton
b)
ionic bond
c)
density (D)
d)
ionic compound
8.
Two or more atoms chemically joined are called...
a)
atoms
b)
ionics
c)
covalents
d)
compounds
9.
What is the left part of a chemical equation called?
H2 + O → H2O
H2 + O → H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
10.
What is the right part of a chemical equation called?
H2 + O → H2O
H2 + O → H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
11.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
12.
pH less than 7.
a)
Acids
b)
Bases
c)
All
13.
pH greater than 7.
a)
Acids
b)
Bases
c)
All
d)
pure water
14.
Which food is the most acidic?
a)
bananas
b)
lemon juice
c)
orange juice
d)
fish
15.
Why can water have no net charge but have slight charges in different parts of the molecule?
a)
the molecule is polar, with partial positive and negative parts
b)
The hydrogen end is slightly negative and the oxygen end is slightly positive
c)
The hydrogen and oxygen ends change in polarity
d)
Because it is hydrophobic
16.
Which of the following organic compounds is the main source of energy for living things?
a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
17.
_ is/are used to build and repair muscle.
a)
carbohydrates
b)
fiber
c)
protein
d)
fat
18.
What kinds of food can you get protein from in your diet?
a)
Eggs
b)
Meat and Fish
c)
Nuts and Legumes
d)
All of the above
19.
Enzymes are considered to be
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
20.
What is the purpose of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
21.
What is the function of nucleic acids?
a)
Stores energy
b)
Stores genetic information
c)
Movement
d)
Physical structure
22.
The substance being dissolved is called the
a)
solvent
b)
solute
c)
mixture
d)
solution
23.
The substance that something is being dissolved into is called the
a)
solvent.
b)
solute.
c)
mixture.
d)
solution.
24.
When putting salt in water, the water is considered the _________ and the salt is the ___________
a)
solute, solvent
b)
solvent, solute
c)
mixture, solvent
d)
mixture, solute
25.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
26.
A chemical reaction that absorbs (takes in) heat is called
a)
Single replacement
b)
Exothermic
c)
Endothermic
d)
Decomposition
27.
The diagram shows which kind of reaction?
a)
Endothermic reaction
b)
Exothermic reaction
c)
Mixture reaction
d)
Enzyme reaction
28.
The diagram shows which kind of reaction?
a)
Endothermic reaction
b)
Exothermic reaction
c)
Mixture reaction
d)
Enzyme reaction
29.
What are atoms of the same element with different masses called?
a)
elements
b)
atoms
c)
isotopes
d)
compounds
30.
How does an enzyme influence a biological reaction?
a)
It increases the net energy difference between reactants and products
b)
It decreases the activation energy necessary to initiate the chemical change
c)
It increases the kinetic energy of reactants, thereby increasing their tendency to collide
d)
It decreases the kinetic energy of reactants, enabling them to undergo chemical changes more easily
31.
Which of the following best describes the polar nature of water molecules?
a)
Ionic compounds dissolve easily in water
b)
The volume of water decreases by nearly half when it is frozen
c)
Water molecules repel each other
d)
Water molecules repel most other substances
32.
Carbohydrates, lipids, proteins, and nucleic acids are
a)
amino acids
b)
macromolecules
c)
nucleotides
d)
enzymes
33.
A protein that speeds up a reaction is known as a(n)
a)
substrate
b)
enzyme
c)
product
d)
compound
34.
Which of the following is NOT a category of macromolecules?
a)
Water
b)
Carbohydrates
c)
Lipids
d)
Nucleic Acids
35.
The bond that holds together water molecules weakly is what type of bond?
a)
Ionic
b)
Covalent
c)
Metallic
d)
Hydrogen
36.
What are Van der Waals forces?
a)
The attraction of two surfaces at the surface level
b)
The attraction of two surfaces at the molecular level
c)
The attraction of two substances due to adhesive tape
d)
None of the above
37.
What is an isotope?
a)
An atom with varying numbers of protons
b)
An atom with varying numbers of electrons
c)
An atom with varying numbers of neutrons
d)
An atom with varying numbers of particles
38.
What is an ion?
a)
An atom with varying numbers of protons
b)
An atom with varying numbers of electrons
c)
An atom with varying numbers of neutrons
d)
An atom with varying numbers of particles
39.
What is an ionic bond?
a)
Between a metal and a nonmetal
b)
Transfers electrons from one atom to another
c)
Attracts due to opposite charges
d)
All of the above
40.
What is a covalent bond?
a)
Bond between two nonmetals
b)
Electrons are shared between atoms
c)
Can be polar or nonpolar
d)
All of the above
Reset
