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Which group contains the most elements?
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
A neutral solution has a pH of
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
One example of a chemical change is
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
The nucleus of an atom has a positive charge because the nucleus contains
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
Substances that CANNOT be broken down chemically into other substances are
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
Which of the following is NOT an example of a chemical change?
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
The density of a block of wood with a volume of 50 cubic centimeters and a mass of 100 grams is
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
Normal rainfall is slightly acidic, which means its pH must be
protons
7
elements
betwen 5 and 7
ice melting in a glass of water
2 g/cm3
metals
burning paper
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