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38 Cards in this Set
- Front
- Back
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What does an atoms nucleus contain
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Protons and neutrons
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What charge do protons and neutrons have
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Proton=positive
Neutron=negative |
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3 facts about electrons
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Move around the nucleus.
Negatively charged. Occupy shells around the nucleus. |
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Do atoms have the same number of protons and electrons
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Yes
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Do atoms have the same number of protons and electrons
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Yes
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How does an atom become an ion?
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Loses or gains electrons
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Do atoms have the same number of protons and electrons
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Yes
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How does an atom become an ion?
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Loses or gains electrons
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How does an atom become a molecule
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Two or more atoms join together
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Elements have one type of atom. Two examples of elements
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Chlorine gas and hydrogen gas
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Do atoms have the same number of protons and electrons
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Yes
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How does an atom become an ion?
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Loses or gains electrons
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How does an atom become a molecule
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Two or more atoms join together
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Elements have one type of atom. Two examples of elements
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Chlorine gas and hydrogen gas
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What sides of the periodic table are metals and non metals
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Metals- left
Non metals- right |
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What is a vertical column of elements with similar properties called
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A group
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What is a vertical column of elements with similar properties called
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A group
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Mass number?
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Total of protons and neutrons
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What is a vertical column of elements with similar properties called
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A group
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Mass number?
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Total of protons and neutrons
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Atomic number?
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Number of protons
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What is a vertical column of elements with similar properties called
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A group
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Mass number?
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Total of protons and neutrons
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Atomic number?
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Number of protons
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In an atom, are the number if protons and electrons the same?
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Yes
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What is a vertical column of elements with similar properties called
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A group
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Mass number?
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Total of protons and neutrons
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Atomic number?
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Number of protons
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In an atom, are the number if protons and electrons the same?
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Yes
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Which is the mass number?
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The biggest number
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What are the maximum number of electrons allowed in each shell of an atom
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1st = 2 electrons
2nd = 8 electrons 3rd = 8 electrons Etc = 8 electrons |
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What do compounds and mixtures have in common?
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Both contain different types of atoms
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What do compounds and mixtures have in common?
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Both contain different types of atoms
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What is a compound?
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Different atoms that have chemically bonded together
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What do compounds and mixtures have in common?
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Both contain different types of atoms
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What is a compound?
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Different atoms that have chemically bonded together e.g salt
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What is a mixture?
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Different substances that are not chemically bonded together e.g rock salt
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What does a formula show?
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What atoms are in a compound
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