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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
ionic bond
B
chemical reaction
C
covalent bond
D
displacement
2) In all chemical reactions atoms are______.
A
always created but never destroyed
B
never created but always destroyed
C
always created and always destroyed
D
never created or 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
texture
C
color
D
types
4) Chemicals present prior to the reaction taking place
A
compounds
B
products
C
reactants
D
subscripts
5) Chemicals remaining once the reaction is complete
A
compounds
B
subscripts
C
products
D
reactants
6) What is placed on the left side of a chemical equation?
A
the reactants
B
the metals
C
the products
D
the nonmetals
7) What is placed on the right side of a chemical equation?
A
the products
B
the arrow
C
metalloids
D
the reactants
8) Which term does not describe the Arrow in a chemical equation?
A
yields
B
magnifies
C
produces
D
forms
9) A chemical ___, or formula equation, represents what happens in a chemical reaction.
A
equation
B
sequence
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
subscript
B
coefficient
C
multiplier
D
exponent
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
indicator
B
coefficient
C
subscript
D
exponent
12) We can ____ add a coefficient in front of a chemical formula.
A
rarely
B
only
C
sometimes
D
never
13) We cannot change or add any ____.
A
numbers
B
coefficients
C
subscripts
D
molecules
*select an answer for all questions
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