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