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A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the independent variable is...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
Which of the following is NOT a property of neutrons?
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
The atomic mass is equal to...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
Anything that has mass and takes up space is...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
What is the correct order of the steps in the scientific method?
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
Each element has...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
A substance that cannot be broken down into simpler substances by chemical methods is...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
The unit amu stands for...
make a hypothesis - test the hypothesis - draw conclusions
has a negative electric charge
an element
the amount of salt in the water
all of the above
atomic mass unit
matter
the number of protons and the number of neutrons
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