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Chemical Formulas And Equations
Test Description: Chemical Formulas and Equations
Instructions: Answer all questions to get your test result.
1) The small number wriiten after a symbol is called a:
A
subscript
B
coefficient
C
product
D
reactant
2) The substances that exist before the reaction begins are called:
A
compounds
B
elements
C
reactants
D
products
3) The Law of conservation of mass states that:
A
Mass decreases in a reaction
B
Mass increases in a reaction
C
Mass is not lost in a reaction
4) The large number that is written before a symbol or formula is called a:
A
reactant
B
coefficient
C
product
D
subscript
5) This occurs naturally and cannot be changed:
A
reactants
B
products
C
coefficients
D
subscripts
6) In an endothermic reaction, the product will feel:
A
hotter
B
colder
C
like a solid
D
the same
7) In an exothermic reaction, the product will feel:
A
like a liquid
B
colder
C
hotter
D
the same
8) 2 or more elements that have been combined (NaCl) is called a:
A
Compound
B
Chemical equation
C
Chemical formula
D
Atom
9) What is written before the arrow in a chemical equation?
A
subscript
B
reactants
C
coefficient
D
products
10) What is written after the arrow in a chemical equation?
A
subscript
B
coefficient
C
products
D
reactants
*select an answer for all questions
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