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WorksheetsChemistry of Life
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Substances that dissociate in water and release hydrogen ions (H+)
a)
bases
b)
acids
c)
compounds
d)
ions
2.
Used to indicate acidity or alkalinity of a substance. Ranges from 0-14. Each unit has a 10 times difference in acidity or alkalinity
a)
acid scale
b)
base scale
c)
pH scale
d)
ion scale
3.
Which is NOT one of the four elements that make up over 90% of the human body
a)
Carbon
b)
Nitrogen
c)
Chlorine
d)
Oxygen
4.
Which of the following is NOT true of atoms?
a)
They are composed of molecules.
b)
They can combine with other atoms.
c)
They make up elements
d)
They are extremely small
5.
A negatively charged particle moving around the nucleus of an atom
a)
neutron
b)
proton
c)
electron
d)
ion
6.
What particle is found in the nucleus and has no charge?
a)
electron
b)
neutron
c)
proton
d)
atom
7.
An atom becomes negatively charged by
a)
gaining an electron
b)
losing an electron
c)
losing a proton
gaining a neutron
gaining a neutron
8.
The space surrounding the nucleus of an atom contains
a)
protons
b)
electrons
c)
neutrons
d)
ions
9.
Number of protons that an atom has
a)
Atomic symbol
b)
Atomic Number
c)
Atomic Mass
d)
Mass Number
10.
What determines the chemical properties of an atom?
a)
The number of protons in the nucleus
b)
Number of electrons in the outside shell
c)
The number of protons in the outside shell
d)
The number of electrons in the nucleus
11.
Atoms having the same number of protons but different numbers of neutrons
a)
molecule
b)
atom
c)
compound
d)
isotopes
12.
Two or more atoms combined
a)
Molecule
b)
Compound
c)
Isotope
d)
Ion
13.
Two or more different atoms combined
a)
Molecule
b)
Compound
c)
Isotope
d)
Ion
14.
Bond created by electrical attraction between atoms (+ and -)
a)
Ionic bond
b)
Covalent bond
c)
Hydrogen bond
d)
van der Waals
15.
Attraction between slightly positive atom of one molecule to a slightly negative atom of another molecule
a)
ionic bond
b)
hydrogen bond
c)
covalent bond
d)
van der Waals
16.
Bond created by the sharing of electrons
a)
Ionic Bond
b)
Hydrogen Bond
c)
Covalent Bond
d)
van der Waals
17.
A charged atoms (caused by gain or loss of electrons)
a)
Ion
b)
molecule
c)
element
d)
compound
18.
Attractions between molecules of the same substance
a)
adhesion
b)
cohesion
c)
mixture
d)
acid
19.
Substances formed by a chemical reaction
a)
products
b)
reactants
c)
coefficients
d)
solution
20.
Who am I? I'm a polymer composed of amino acids that are linked by peptide bonds. Amino acid bonds determine my folds.
a)
Lipid
b)
Carbohydrate
c)
Protein
d)
Sugar
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