WorksheetsPhysical Sci Reactions
Total questions: 44
Worksheet time: 22mins
The process by which the atoms of one or more substances are rearranged to form different substances
Chemical Reaction
Reactant
Product
Chemical Formula
A way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule
Chemical Reaction
Reactant
Product
Chemical Formula
A whole number written in front of a chemical formula in a balanced equation, indicating how many molecules or atoms of that substance are involved in a chemical reaction
Reactant
Product
Subscript
Coefficient
A small number written slightly below and to the right of a chemical symbol in a formula, indicating the number of atoms of that element present in a molecule or compound
Reactant
Product
Subscript
Coefficient
Starting substances in a chemical reaction
Reactant
Product
Subscript
Coefficient
Substances that are formed in a chemical reaction
Reactant
Product
Subscript
Coefficient
Blue represents
Coefficient
Subscript
Product
Reactant
Purple represents
Coefficient
Subscript
Product
Reactant
Right side of Chemical Reaction
Coefficient
Subscript
Product
Reactant
The --> in a chemical equation represents
Product
Subscript
State of Matter
Yields
Left side of Chemical Reaction
Coefficient
Subscript
Product
Reactant
Dissolves in water
Product
Reactant
Aqueous
Precipitate
An insoluble compound that comes out of solution
Product
Reactant
Aqueous
Precipitate
Which is NOT an example of a chemical change
Burning
Melting
Rusting
Decomposing
Matter cannot be created or destroyed, it only changes forms
Chemical Equation
Chemical Formula
Chemical Reaction
Law of Conservation of Mass
Change that happens when one chemical substance is transformed into one or more different substances
Chemical Equation
Chemical Change
Chemical Reaction
Law of Conservation of Mass
What numbers CAN be changed to balance a chemical reaction
Coefficient
Subscript
What numbers CANNOT be changed to balance a chemical reaction
Coefficient
Subscript
How many Calcium? Ca₃(PO₄)₂
3
6
8
1
How many Phosphorous? Ca₃(PO₄)₂
3
2
8
1
How many Oxygen? Ca₃(PO₄)₂
3
2
8
4
How many Magnesium? 2Mg(OH)₂
6
2
4
8
How many Oxygen? 2Mg(OH)₂
1
2
4
8
How many Hydrogen? 2Mg(OH)₂
1
2
4
8
Which is NOT an examples of evidence that a chemical reaction has occurred
Release of Light
Sudden Change of Color
Melting
Formation of precipitate
Which is NOT an examples of evidence that a chemical reaction has occurred
Odor Change
Gas Given Off
Temperature Change
Ripping/Tearing
2 or more reactants form 1 product
Synthesis
Decomposition
Combustion
Single Replacement
1 reactant breaks down into 2 or more products
Synthesis
Decomposition
Combustion
Single Replacement
Something is burned; O₂ is always a reactant; CO₂ and H₂O are always products
Synthesis
Decomposition
Combustion
Single Replacement
1 element reacts with 1 compound and swaps, making 1 new compound and 1 new element (like elements switch
Double Replacement
Decomposition
Combustion
Single Replacement
2 compounds react to form 2 new compounds (ions swap); forms a precipitate
Double Replacement
Decomposition
Combustion
Single Replacement
Type of Chemical Reaction: 2AlBr₃ + 3K₂SO₄ --> 6KBr + Al₂(SO4)₃
Double Replacement
Decomposition
Combustion
Single Replacement
Type of Chemical Reaction: 2LiCl + Br₂ --> 2LiBr + Cl₂
Double Replacement
Decomposition
Combustion
Single Replacement
Type of Chemical Reaction: 2NF₃ --> N₂ + 3F₂
Synthesis
Decomposition
Combustion
Single Replacement
Type of Chemical Reaction: 2C₄H₁₀ + 13O₂ --> 8CO₂ + 10H₂O
Synthesis
Decomposition
Combustion
Single Replacement
Chemical reactions that release energy
Exergonic
Exothermic
Endogonic
Endothermic
Chemical reactions that release energy as heat
Exergonic
Exothermic
Endogonic
Endothermic
Chemical reactions that absorb energy
Exergonic
Exothermic
Endogonic
Endothermic
Chemical reactions that absorb energy as heat
Exergonic
Exothermic
Endogonic
Endothermic
How quickly a reaction takes place
Chemical Reaction
Reaction Rate
Chemical Formula
Combustion
A change in a substance that only affects its physical properties
Chemical Change
Reaction Rate
Physical Change
Combustion
Which factor does NOT affect Reaction Rate
Temperature
Concentration
Surface Area
Color
Which factor does NOT affect Reaction Rate
Catalyst
Pressure
Surface Area
Taste
Substance that speeds up a chemical reaction
Catalyst
Pressure
Surface Area
Inhibitor
