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How do you know if a substance is an element or a compound?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
Which two subatomic particles are relatively the same size in mass?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
What does the law of conservation of matter state about a chemical equation?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
How many ELEMENTS are in 2NaCl?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
What are valence electrons?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
Metals are located where on the periodic table?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
How many ATOMS are in 2NaCl?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
What is another name for rows on the periodic table?
2
Periods
Protons and Neutrons
The number of reactant atoms needs to equal the number of product atoms
Left of the zigzag line
Elements are just one, compounds are 2 or more DIFFERENT elements
4
Outer most electrons
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