WorksheetsIntroduction to Chemistry of Biology
Total questions: 20
Worksheet time: 17mins
Which of the following statements is NOT true?
Life depends on chemistry?
Living things are composed of chemical compounds
In order to understand biology, one must first understand the chemistry of life
Chemistry and Biology are not intertwined.
Name the 3 subatomic particles of an atom.
Proteins
Electrons
Neutrons
Protons
Name the 2 subatomic particles have the same mass.
Protons
Electrons
Neutrons
Protons have a ____ charge.
Positive
Negative
No charge
Electrons have a ____ charge.
Positive
Negative
No charge
Neutrons have a ____ charge.
Positive
Negative
No charge
Which statement is false in describing elements?
Elements are pure substances
We have less than 100 elements
20-24 elements are found in living organisms
Elements are made of the same type of atom
Which of the following in not a compound?
H2O
O
CO2
NaCl
A compound does not have definite proportions.
True
False
Name the two examples of an element found below.
H2O
H2
K
I
There are two types of bonds -- Ionic and Covalent
True
False
Ionic bonds share electrons
true
false
If an atom loses an electron, it will then have a ______ charge.
positive
negative
no change
If an atom gains an electron, it will then have a ______ charge.
positive
negative
no change
Covalent Bonds share electrons
True
False
Polar molecules are
cold molecules
shared equally
not shared equally
have the same degree of attraction
H2O Oxygen and Hydrogen share
Polar ionic bond
Non-polar Ionic bond
Non-polar covalent bond
Polar covalent bond
Which of the following statements about water is false?
Oxygen has a stronger attraction to electrons then hydrogen.
Hydrogen has a slightly positive charge
Oxygen has a slightly positive charge
Water is an example of a polar covalent bond
Non-polar covalent bonds share electrons equally.
True
False
Which is not a kind of bond?
Ionic
Covalent
Hydrogen
Polar
