Chemical & Physical Changes
Physical or Chemical Change: Bread Rising
Chemical Change
The highest surface part of a wave
Crest
An acid-base _______________ tells us whether we have an acid or a base.
Indicator
How do you smell items in the lab?
Waft or Fan
How many siblings does Ms. Crawford have?
9
Physical or Chemical Change: Leaves Changing Colors
Physical Change
The lowest part of a wave
Trough
What is 2 on the pH scale?
Acid
What type of shoes do you wear in the Lab?
Close toed shoes or sneakers
Who is Mrs. Lowell
Coach K
Physical or Chemical: Iron Rusting
Chemical Change
The vertical distance between a peak or valley and the resting position in a traverse wave is called a(n) ____.
Amplitude
Acid or Base: Ammonia 11.6
Base
What type of clothes do you wear in the lab?
Pants and Long-sleeved shirt
What time is lunch?
11:35
A change in form or appearance of a substance that does not result in a new substance.
Physical Change
Waves are generated when a source of ______ forces the matter in a medium to vibrate.
Energy
What does pH stand for?
Power of Hydrogen
A student is working hard on a chemistry lab experiment that uses a strong acid. Halfway through the lab, the student gets hungry and starts eating a bag of chips. What Lab rule did the student break?
Eating in the lab
Name the two of the front office secretaries.
Ms. Patty Fink & Ms. Rivera
When two or more molecules interact and change into a new substance
Chemical Reaction/ Change
Waves that move through a medium at right angles to the direction of the wave are called_____.
Transverse
Sugar solution does not change the color of either blue or red litmus paper. Therefore, the sugar solution is _______________.
Neutral
During a chemistry experiment, a student carefully pours an unknown solution from a test tube into a beaker. Another student sneaks up behind them and surprises their friends. The student accidentally drops the beaker on the floor, and pieces of glass land on their sandaled feet. What do you do next?
Tell the teacher immediately
What military branch did Mr. C serve in?
Marine Corps