WorksheetsBasic Chemistry Review
Total questions: 29
Worksheet time: 28mins
Name
Class
Date
1.
What is the smallest basic unit of matter?
a)
Cell
b)
Atom
c)
Organism
d)
Electron
2.
Hydrogen is one type of atom
a)
True
b)
False
3.
Which one is in the nucleus of an atom?
a)
Protons
b)
Electrons
c)
Neutrons
4.
Protons have what charge?
a)
Positive
b)
Negative
c)
Neutral
5.
Neutrons have what charge?
a)
Positive
b)
Negative
c)
Neutral
6.
Electrons have what type of charge?
a)
Positive
b)
Negative
c)
Neutral
7.
What is made of atoms of different elements bonded together?
a)
Organisms
b)
Cells
c)
Compounds
d)
Ion
8.
What is an atom that has gained or lost an electron?
a)
Ion
b)
Proton
c)
Compound
d)
Neutron
9.
What type of bond forms between oppositely charged ions?
a)
Ionic
b)
Covalent
c)
Hydrogen
d)
Peptide
10.
What type of bond forms when atoms share a pair of electrons?
a)
Ionic
b)
Covalent
c)
Hydrogen
d)
Peptide
11.
Chemical reactions change substances into diff. ones by breaking and forming chemical bonds.
a)
True
b)
False
12.
What is the reactant(s) in this chemical reaction?
a)
2H2O
b)
2H2
c)
O2
d)
All of the above
13.
What is/are the product(s) in the left to right equation?
a)
CO2
b)
H2O
c)
H2CO3
d)
All of the above
14.
What is the amount of energy that needs to be absorbed to start a chemical reaction?
a)
Bond energy
b)
Activation energy
c)
Endothermic reaction
d)
Exothermic reaction
15.
What type of reaction is this graph representing?
a)
Endergonic
b)
Exergonic
c)
Catalytic
d)
Activation energy
16.
What type of reaction is the graph representing?
a)
Endergonic
b)
Exergonic
c)
Catalytic
d)
Activation energy
17.
Enzymes are catalysts for chemical reactions in living organisms
a)
True
b)
False
18.
What reaction does the graph represent?
a)
Endergonic
b)
Exergonic
c)
Exergonic with an enzyme
d)
Endergonic with an enzyme
19.
What is represented by letter A?
a)
Active site
b)
Enzyme
c)
Substrate
d)
Product
20.
What is represented by letter B?
a)
Active site
b)
Enzyme
c)
Substrate
d)
Product
21.
What is the area called where the substrate and enzyme bind together? (Represented by C)
a)
Active site
b)
Enzyme
c)
Substrate
d)
Product
22.
What is represented by the letter E?
a)
Active site
b)
Enzyme
c)
Substrate
d)
Product
23.
Anything that occupies space and has mass is called
a)
Matter
b)
Volume
c)
Density
d)
Weight
24.
The amount of matter in an object is referred to as
a)
Density
b)
Volume
c)
Weight
d)
Mass
25.
The pull of gravity on an object is referred to as
a)
Density
b)
Volume
c)
Weight
d)
Matter
26.
What is matter that is composed of only ONE type of atom called?
a)
Ion
b)
Compound
c)
Element
d)
Molecule
27.
The atomic number tells you what info about an atom?
a)
The number of protons
b)
The number of neutrons
c)
How many rings of electrons are present
d)
Mass of the atom
28.
The atomic mass tells you what info about an atom?
a)
Protons + Electrons
b)
Protons + Neutrons
c)
Just the neutrons
d)
Protons + Neutrons + Electrons
29.
The electrons that are just in the outermost level of electrons are called
a)
Valence Electrons
b)
Outer electrons
c)
Farthest electrons
d)
There is no special name for these electrons
100 %
