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W15 Quiz Practice Balancing Equations (OHDELA 23-24)
Test Description: Balancing Eq practice
Instructions: Answer all questions to get your test result.
1) What is a process where one or more elements or compounds are changed into one or more different substances?
A
chemical reaction
B
displacement
C
covalent bond
D
ionic bond
2) In all chemical reactions atoms are______.
A
always created but never destroyed
B
never created or destroyed
C
always created and always destroyed
D
never created but always destroyed
3) In a chemical reaction the mass and _____ of atoms that make up the reactants must be equal to the mass and types of atoms in the products.
A
shape
B
color
C
types
D
texture
4) Chemicals present prior to the reaction taking place
A
subscripts
B
compounds
C
products
D
reactants
5) Chemicals remaining once the reaction is complete
A
compounds
B
reactants
C
subscripts
D
products
6) What is placed on the left side of a chemical equation?
A
the products
B
the nonmetals
C
the reactants
D
the metals
7) What is placed on the right side of a chemical equation?
A
the reactants
B
the arrow
C
metalloids
D
the products
8) Which term does not describe the Arrow in a chemical equation?
A
yields
B
produces
C
forms
D
magnifies
9) A chemical ___, or formula equation, represents what happens in a chemical reaction.
A
sequence
B
equation
C
progression
D
procedure
10) A number placed before a molecule that tells us how many of those molecules we have in the formula.
A
exponent
B
multiplier
C
subscript
D
coefficient
11) A number placed after an element and below the line that tells us how many atoms of that element are in the molecule.
A
subscript
B
exponent
C
indicator
D
coefficient
12) We can ____ add a coefficient in front of a chemical formula.
A
sometimes
B
only
C
rarely
D
never
13) We cannot change or add any ____.
A
coefficients
B
numbers
C
molecules
D
subscripts
*select an answer for all questions
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