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Chemistry
Test Description: Acids, bases, solubility, etc.
Instructions: Answer all questions to get your test result.
1) A chemical reaction that absorbs energy in the form of heat is
A
exothermic
B
unbalanced
C
combustion
D
endothermic
2) A measure of how well a solute can dissolve in a solvent at a given temperature is that substance's
A
concentration
B
combustion
C
saturation point
D
solubility
3) Which of the following does NOT increase the # of particles if a substance available to react in a chemical reaction?
A
increasing the surface area
B
increasing the concentration
C
increasing the mass
D
adding a catalyst
4) A characteristic property that can help tell similar liquids apart is
A
melting point
B
freezing point
C
hardness
D
boiling point
5) A bottle of hydrogen peroxide that eventually turns into a bottle of water and oxygen gas is an example of a
A
replacement reaction
B
precipitate reaction
C
decomposition reaction
D
synthesis reaction
6) A substance that tastes bitter, turns red litmus paper blue and feels slippery is
A
an acid
B
an indicator
C
neutral
D
a base
7) What is the smallest part of an element?
A
molecule
B
mixture
C
atom
D
compound
8) How is a solute different from a solvent in a solution?
A
The solute is present in a smaller amount
B
The solute is present in a greater amount
C
The solute is a liquid and the solvent is a gas
D
The solute is a solid and the solvent is a liquid
9) Which type of matter consists of 2 or more substances that are NOT chemically combined?
A
mixture
B
elements
C
pure substances
D
compounds
10) How do liquid water, ice, and water vapor differ from each other?
A
They are different compounds
B
They are different states of matter
C
They are made of different kinds of atoms.
D
They are made of different kinds of molecules
*select an answer for all questions
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