Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Chemical Reactions
Test Description: 8.5E
Instructions: Answer all questions to get your test result.
1) Drew added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. He noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. Drew concluded that--
A
The water, sugar, and yeast were products of a chemical reaction.
B
The bubbles indicated a chemical change.
C
A physical change was occurring.
D
The strong smell was evidence of a physical change.
2) Antifreeze is a chemical used to protect cars from radiator leaks, freezing, and overheating. Which statement about antifreeze is most useful to know before planning a long road trip across the southwestern US this summer?
A
Antifreeze is used as a de-icing solution for aircraft and runways.
B
Antifreeze is odorless but has a sweet taste.
C
Antifreeze is safe for the environment.
D
Using antifreeze and water in a car's radiator raises the boiling point of the mixture to 256° F.
3) A student mixes two solutions, planning to produce a chemical reaction. Which of the following is NOT evidence that a chemical reaction is happening?
A
color change
B
odor change
C
temperature change
D
no observable change
4) A student mixes two solutions, planning to produce carbon dioxide. Which of the following is the BEST evidence that a chemical reaction is producing carbon dioxide?
A
formation of a solid
B
formation of bubbles
C
temperature change
D
color change
5) Which of the following demonstrates that a new substance can be formed from a chemical reaction?
A
water evaporating
B
iron bending
C
milk souring
D
helium-filled balloon floating
6) Hydrogen peroxide is a substance often used to disinfect wounds or cuts. Its chemical formula is H2O2. What is the ratio of hydrogen atoms to oxygen atoms?
A
1:2
B
2:1
C
1:1
D
2:4
7) Which of the following is a chemical property associated with wood?
A
floating on water
B
snapping when bent
C
ability to burn
D
having a rough surface
8) Which of the following is a chemical property of iron?
A
sticking to a magnet
B
rusting over time
C
melting when heated
D
conducting electricity
9) Which of the following is the BEST evidence that rusting is a chemical property rather than a physical property of iron?
A
Rust forms slowly.
B
Rust can form on any iron.
C
Rust does not look the same as iron.
D
Rust cannot turn back into iron.
10) In the process of a chemical reaction, which of the following is the LEAST LIKELY to occur?
A
yielding one or more products
B
products usually have different properties
C
visible chemical changes
D
no changes observed
*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?