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Which of these is an example of an exothermic chemical process?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
Which of the following elements is a transition metal?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
Which element is an alkaline earth metal?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
Which group in the periodic table forms ions that have a valence of 1+?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
Which accounts for most of the mass of an atom?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
What is an isotope?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
How is this reaction classified? CaO + H2O -- Ca(OH)2 + heat
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
Which of the following elements is classified as a metal?
Atoms that have a different number of neutrons
exothermic
magnesium
lithium
combustion of gasoline
Zinc
protons and neutrons
1
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