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8th Grade Review - Matter/Chemistry
Test Description: Coach Book Ch.1
Instructions: Answer all questions to get your test result.
1) What 2 elements are in the same group or fmaily?
A
fluorine and chlorine
B
chlorine and argon
C
sulfur and chlorine
D
flourine and neon
2) According to the law of Conservation of Mass, which of these statements are true?
A
The mass of the reactants in a chemical reaction is greater than the mass of the products.
B
Atoms are broken down into smaller parts in a chemical reaction.
C
The mass of products in a chemical reaction equals the mass of the reactants.
D
New matter is created in a chemical reactions
3) When substances are combined to form a mixture, they
A
form a new compound
B
keep their original properties
C
form new chemical bonds
D
cannot be separated physically
4) If you heart a liquid to determine the temperature at which it forms bubbles and changes to a gas, you are measuring
A
a physical property called conductivity
B
a chemical property called reactivity
C
a physical property called boiling point
D
a chemical property called solubility
5) Elements in the same column of the periodic table have
A
the same number of protons
B
similar atomic masses
C
atoms of the same size
D
similar chemical properties
6) Which of these is a physical change?
A
melting
B
burning
C
rusting
D
forming a precipitate
7) Which of the following statements about elements is FALSE?
A
an element is made up of a compound
B
an element is represented by a chemical symbol
C
each element has its own atomic number
D
an element is a pure substance
8) Where are the metalloids located in the period table?
A
along the stairstep line
B
in the top row
C
in the far-right corner
D
in the far-left corner
9) Which is always tru of a balanced chemical equation/
A
The number of molecules is the same on both sides of the equation
B
Coefficients on both sides of the equation are multiples of 2
C
Both sides of the equation contain the same elements and the same number of atoms
D
The subscripts on one side of the equation are the same as the subscripts on the other sidets
10) Which of these is NOT evidence that a chemical change may have taken place?
A
change in shape
B
formation of precipitate
C
release of heat
D
change in color
*select an answer for all questions
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