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Chemical Formulas
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Is this chemical equation balanced or unbalanced?
Balanced
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How many Nitrogen atoms are in this chemical formula?
12
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What is the Law of Conservation of Mass?
Matter cannot be created or destroyed
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How many oxygen atoms are in this chemical formula
36
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How many Potassium atoms are in this chemical formula?
8
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What is Mg(NO3)2 made up of? Include elements and number of them.
1 Magnesium 2 nitrogen's 6 oxygens
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How many total atoms in this chemical formula?
21
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Identify the evidence of a chemical change in this reaction.
Formation of a gas, bubbles
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If there is no subscript, there is ______ atom(s) of that element.
1
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How many total atoms are in this chemical formula?
9
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How many total atoms does this chemical formula have?
13
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Is this chemical equation balanced or unbalanced?
unbalanced
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What part of a chemical reaction is number 1?
Reactants
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What are the subscripts in this chemical formula?
Mg= 1 Cl=2
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2 is a coefficient or subscript?
subscript
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What part of a chemical reaction is number 2?
Products
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Chemical reactions that release energy are called __________.
Exothermic
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Identify what evidence of a chemical reaction is shown in the picture.
Precipate Formed
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What elements are in this chemical formula?
Potassium (K) Carbon (C) Oxygen (O)
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What elements are in this chemical formula?
Zinc (Zn) Sulfur (S) Oxygen (O)
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How many total atoms in this chemical formula?
52
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How many total atoms in this chemical formula?
42
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Identify what evidence of a chemical reaction is shown in the picture.
unexpected color change
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The coefficient tell us what about the chemical formula?
how many compounds there are
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Chemical changes that absorb energy are called __________.
Endothermic reactions
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What is the coefficient in this chemical formula?
coefficient:3
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Which is the correct formula for: three hydrogen (H) one sulfur (S) four oxygen (O):
H3SO4
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What is NaHCO3 (Baking Soda) made up of?
1 sodium, 1 hydrogen, 1 carbon, 3 oxygen
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