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Atoms
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Use your periodic table: Which atom has 6 protons?
Carbon
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How do you find the number of electrons in an atom?
It is equal to the atomic number
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How do you find the number of protons in an atom?
It is equal to the atomic number
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How do you find the number of neutrons in an atom?
atomic mass - atomic number
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What happens when the number of protons or electrons in an atom changes?
You get a different type of atom.
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Name five different atoms.
(Teacher checks)
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The center of an atom is called the __________.
nucleus
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How many neutrons in an atom of gold?
118 (197-79=118)
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Two hydrogen atoms and one oxygen atom stuck together creates what molecule?
water (H2O)
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True or false: Hydrogen is the most abundant atom on Earth
True
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True or False: only living things are made of atoms
False - ALL things are made of atoms
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How many electrons in an oxygen atom?
8
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More than one atom stuck together creates a ________________.
molecule
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True or False: Atoms are mostly empty space
True
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True or False: There are over 500 kinds of atoms
False - There are over 100 kinds of atoms
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Use your periodic table: How many electrons does calcium have?
20
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