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