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WorksheetsChemistry of Life
Total questions: 52
Worksheet time: 26mins
What subatomic particle found in an atom has a positive charge?
proton
neutron
electron
What subatomic particle found in an atom has a negative charge?
proton
neutron
electron
What subatomic particle found in an atom has a no charge?
proton
neutron
electron
What subatomic particles are found in the nucleus of an atom?
protons and neutrons
protons and electrons
neutrons and electrons
What subatomic particles are found in energy levels surrounding the nucleus?
protons
neutrons
electrons
How many electrons fit in the first energy level of an atom?
2
4
6
8
How many electrons fit in the second energy level of an atom?
2
4
6
8
The atomic number represents the number of ____ in an atom.
protons
neutrons
electrons
Protons have a ____ charge.
positive
negative
neutral
Electrons have a ____ charge.
positive
negative
neutral
Neutrons have a ____ charge.
positive
negative
neutral
What four elements are essential to all living organisms?
carbon, hydrogen, oxygen, nitrogen
hydrogen, oxygen, potassium, sodium
oxygen, nitrogen, chlorine, sodium
nitrogen, carbon, boron, hydrogen
What subatomic particles are red in the diagram?
protons
neutrons
electrons
What subatomic particles are blue in the diagram?
protons
neutrons
electrons
What subatomic particles are green in the diagram?
protons
neutrons
electrons
A(n) ____ is a pure substance that can not be broken down.
element
compound
mixture
A(n) ___ is a substance made up of two or more elements chemically combined.
element
compound
mixture
A(n) ___ is a combination of substances in which the individual components do not combine chemically and retain their own properties.
element
compound
mixture
A ____ mixture consists of different ingredients that are not even throughout.
homogeneous
heterogeneous
A ___ mixture has the same uniform appearance and composition throughout.
homogeneous
heterogeneous
A ____ is another name for a homogeneous mixture.
element
compound
solution
minerals
Gold (Au) is an example of a(n) ___.
element
compound
mixture
A beaker of sand and salt is an example of a(n) ___.
element
compound
mixture
Water is an example of a(n) ___.
element
compound
mixture
Carbon (C) is an example of a(n) ___.
element
compound
mixture
Sand and salt poured together is an example of a(n) ___.
element
compound
mixture
NaCl is an example of a(n) ___.
element
compound
mixture
pH stands for _____.
percent hydrogen ions
percent hydroxide ions
percent helium ions
percent chloride ions
The pH scale ranges from _____.
0-7
7-14
0-14
0-20
H+ is the symbol for _____.
hydroxide ion
hydrogen ion
OH- is the symbol for _____.
hydrogen ions
hydroxide ions
A(n) ____ is a substance that forms hydrogen ions in solution.
acid
base
A(n) ____ is a substance that forms hydroxide ions in solution.
acid
base
A solution with a pH of 5 is considered a(n) _____.
acid
base
A solution with a pH of 12 is considered a(n) _____.
acid
base
Which has more hydrogen ions a solution with a pH of 2 or a solution with a pH of 4?
2
4
Which has more hydroxide ions a solution with a pH of 8 or a solution with a pH of 12?
8
12
Which solution has an equal amount of hydrogen and hydroxide ions?
pH = 2
pH = 4
pH = 7
pH = 12
Name the monomers that make up carbohydrates.
Monosaccharides
Fatty Acids and Glycerol
Amino Acids
Nucleotides
Name the monomers that make up proteins.
Monosaccharides
Fatty Acids and Glycerol
Amino Acids
Nucleotides
Name the monomers that make up proteins.
Monosaccharides
Fatty Acids and Glycerol
Amino Acids
Nucleotides
Name the monomers that make up lipids.
Monosaccharides
Fatty Acids and Glycerol
Amino Acids
Nucleotides
Name the monomers that make up nucleic acids.
Monosaccharides
Fatty Acids and Glycerol
Amino Acids
Nucleotides
Name the macromolecules that are responsible for short term energy storage.
Carbohydrates
Lipids
Proteins
Nucleic Acids
Name the macromolecules that are responsible for long term energy storage.
Carbohydrates
Lipids
Proteins
Nucleic Acids
Name the macromolecules that are responsible for providing structure and speed up chemical reactions.
Carbohydrates
Lipids
Proteins
Nucleic Acids
Name the macromolecules that are responsible for our genetic information.
Carbohydrates
Lipids
Proteins
Nucleic Acids
What type of bonds are found between two water molecules?
peptide bond
hydrogen bond
ionic bond
covalent bond
Water ____ temperature change.
induces
resists
promotes
helps
Water has a positive end and a negative end which makes it a _____ molecule.
polar
non-polar
Water has the ability to creep up thin tubes because of _____.
capillary action
water is less dense in the solid form
adhesion
resisting temperature change
Ice floats because water is ____ dense in the solid form.
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