Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Regents Chemistry Unit 2
Test Description: Unit 2 chemistry basic concepts review
Instructions: Answer all questions to get your test result.
1) What are elements made of?
A
Compounds
B
Gluons
C
Atoms
D
Molecules
2) What term is used to describe substances that are made of elements that are chemically bonded together and can be decomposed by chemical change back into separate elements?
A
Compound
B
Homogeneous mixture
C
Element
D
Heterogeneous mixture
3) Elements and compounds are both classified as substances because they are homogeneous. This means that they have the same
A
At least two elements mixed together
B
Source of liquid in the protoplasm
C
Composition of materials throughout the sample
D
Number of protons in an atom
4) What type of solution is created when a solute such as NaCl is dissolved into water?
A
Amalgam
B
Aqueous solution
C
Tincture
D
Alloy
5) If a mixture has a varying composition throughout the sample, it is classified as a
A
Compound
B
Heterogeneous mixture
C
Homogenous mixture
D
Substance
6) Soil is an example of a(n)
A
Compound
B
Homogeneous mixture
C
Heterogeneous mixture
D
Element
7) Which of the following is an example of a physical change?
A
Melting
B
Combustion
C
Decomposition
D
Corrosion
8) Which of the following is an example of a chemical change?
A
Crushing
B
Boiling
C
Combustion
D
Evaporating
9) If 75 grams of substance A are reacted with 25 grams of substance B to form substance C, what will the mass of substance C be?
A
50 grams
B
100 grams
C
25 grams
D
75 grams
10) The energy of motion is
A
Potential Energy
B
Kinetic Energy
C
Chemical Energy
D
Elastic Energy
11) What direction does heat always flow?
A
Hot to cold
B
Inside to outside
C
Outside to inside
D
Cold to hold
12) What occurs during exothermic reactions?
A
Heat energy is given off
B
Heat energy is absorbed
C
Specific heats are calculated
D
Liquids are created
13) What occurs during endothermic reactions?
A
Liquids are created
B
Specific heats are calculated
C
Heat energy is given off
D
Heat energy is absorbed
14) If a scientist measures the temperature of water in a container surrounding a chemical reaction before and after the reaction, she is probably performing
A
Distillation
B
Electrophoresis
C
Titration
D
Calorimetry
15) In a calorimetry problem, what does C represent?
A
Specific heat of liquid
B
Grams of water
C
Change in temperature
D
Joules of energy
16) What term is used to describe the change in potential energy that accompanies a chemical reaction?
A
Delta H
B
PED
C
Endothermic
D
Exothermic
17) A positive change in potential energy indicates that energy was absorbed from the surroundings, thus lowering the temperature of the surroundings. This describes an
A
Exothermic reaction
B
Equilibrium reaction
C
Endothermic reaction
D
Elastic reaction
18) A decrease in potential energy (- delta H) indicates that energy was lost from the system and released into the surroundings, thus increasing the temperature of the surroundings. This describes an
A
Endothermic reaction
B
Elastic reaction
C
Exothermic reaction
D
Equilibrium reaction
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?