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Boost Review: Matter: Properties And Change
Test Description: 8.P.1.: Understand the properties of matter and changes that occur when matter interacts in an open and closed system.
Instructions: Answer all questions to get your test result.
1) According to the law of conservation of mass, which statement is true?
A
Atoms are broken down into smaller parts.
B
The mass of the products are equal to the mass of the reactants.
C
The mass of the products is greater than the mass of the reactants.
D
New matter is created during a chemical reaction.
2) When substances are combined to form a mixture, they ___________
A
form new compounds
B
cannot be separated physically.
C
keep their original properties
D
form new chemical bonds
3) If you heat a liquid to determine the temperature at which if forms bubbles and changes into a gas, you are measuring______
A
a chemical property called reactivity
B
a physical property called boiling point
C
a chemical property called solubility
D
a physical property called conductivity
4) Elements in the same column of the periodic table have _____
A
atoms have the same size.
B
have similar atomic mass.
C
similar chemical properties.
D
the same number of protons.
5) Which of these is a physical change?
A
burning
B
melting
C
rusting
D
forming a precipitate.
6) Which of these is a chemical change?
A
burning
B
evaporating
C
melting
D
freezing
7) Which is always true of a balanced chemical equation?
A
Both sides of the equation contain the same number of elements and same number of atoms
B
Subscripts on both sides of the equation are the same.
C
Coefficients on both sides of the equation are multiples of 2.
D
The number of molecules are greater on the reactant side.
8) Which of the following is false about elements?
A
It is a pure substance
B
It is made of compounds
C
The mass of the products are equal to the mass of the reactants.
D
It is represented by a chemical symbol.
9) Where are metalloids located on the periodic table.
A
along the step-like line
B
Atoms are broken down into smaller parts.
C
The mass of the products is greater than the mass of the reactants.
D
New matter is created during a chemical reaction.
10) Which is not evidence of a chemical change?
A
Release Heat
B
change in shape
C
New matter is created during a chemical reaction.
D
gas bubbles are produced
*select an answer for all questions
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