Physical vs Chemical Changes
Presentation
•
Science
•
8th Grade
•
Practice Problem
•
Medium
+1
Standards-aligned
Heather Mull
Used 47+ times
FREE Resource
8 Slides • 12 Questions
1
How do you know which type of change has occurred?
2
The link is also posted in Google Classroom. You must watch the video in order to answer the questions.
https://www.loom.com/share/d833c4666dcc40c09993a39301acf219
3
Multiple Choice
What is the name of the robot in Generation Genius?
Izzy
Doc
Burt
Jeff
4
Multiple Choice
If two substances are mixed and a new substance is formed, what type of change is it?
Physical
Chemical
5
Multiple Choice
Placing the spoon in hot water was a physical change since the melted metal was still…
Iron
Steel
Aluminum
Gallium
6
Multiple Choice
When a substance changes states (melts, evaporates, etc.) it is often what type of change?
Physical
Chemical
7
Multiple Choice
When something burns, it is a __________.
Physical Change
Chemical Change
8
Multiple Choice
True or false: since gas is detected during the candy + soda demo, it is an example of a chemical change.
True, anytime a gas is formed during a reaction it is always a new type of gas.
False, the gas that is detected during the reaction may be a gas the same gas that was present before the reaction took place.
9
You must determine the gas that is present after the reaction is a new gas.
10
Multiple Choice
Dr. Jeff determined the candy + soda demo was a PHYSICAL CHANGE. Which statement is true?
Trapped the gas in a balloon and then poured the gas on lit candles. Since the gas caused the candle flames to go out, this proved the gas was CO2. Since CO2 is not present in the soda before adding candy, this proves a physical change took place.
Trapped the gas in a balloon and then poured the gas on lit candles. Since the gas caused the candle flames to go out, this proved the gas was CO2. Since CO2 is in soda before adding the candy, this proves that no new gas was produced and therefore, this is an example of a physical change.
11
Multiple Choice
Which of these is the most reliable way to see if a new gas has formed?
fill up a ballon
flame test
measure temperature
look at it
12
Multiple Choice
How does hydrogen react in a flame test?
it pops
it will burn brighter
13
Multiple Choice
Milk spoiling is an example of which type of change?
Physical change
Chemical change
14
Multiple Choice
What type of change is mixing air into egg whites to make frosting?
Physical change
Chemical change
15
Attach a pic of your notes & submit in Google Classroom
16
A type of change in which a new substance is formed. For example: burning something.
You may want to add some of these examples to your notes.
17
A type of change in which a new substance is NOT formed. For example: water boiling.
You may want to add some of these examples to your notes.
18
19
20
Multiple Choice
Which atomic diagram depicts a chemical reaction has occurred?
How do you know which type of change has occurred?
Show answer
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