States of Matter
Density
Changes
Acids & Bases
Scientific Method
100
Which state of matter contains a specific volume and shape that does not change?
Solid
100
If an object is less dense than the liquid it is in, it will...
float
100
Physical or chemical change? Making a tin foil hat
Physical change
100
What is the MAIN difference between acids and bases?
Acids are sour, can burn and pass electricity. Bases are bitter, slippery & can dissolve oils.
100
What is a HYPOTHESIS?
A prediction of what will happen in an experiment
200
Which state of matter takes the shape of the container?
Liquid
200
If an object is more dense than the liquid it is in, it will...
sink
200
Physical or chemical change? Rusted metal
Chemical change
200
Name an acid that is safe to eat or drink:
Oranges, lemons or vinegar
200
Which steps in the scientific process HAVE to be done BEFORE an experiment?
1. What did I OBSERVE?
2. What is my QUESTION?
3. What is my HYPOTHESIS?
300
Which state of matter has molecules that spaced and apart and constantly moving?
Gas
300
What is density?
How tightly packed the molecules are in an object, liquid or gas.
300
Which change can be easily be reversed?
Physical change
300
Name a base that is safe to eat or drink.
Milk
Bananas
Baking soda
300
What is the BEST reason to draw a diagram during a scientific experiment?
It can show shape, size, or movement of the idea you are testing.
400
What causes a change in any state of matter?
Temperature changes- heating or cooling
400
Why do most liquids and gases have less density than solids?
The molecules in the solid are touching with very little space between them.
400
What is the MAIN difference between a physical change and a chemical change?
A chemical change can NOT be undone but a physical change CAN be undone.
400
How does the “Ph Scale” help you understand acids and bases?
The scale explains how strong or weak the acid or base is.
400
What does it mean to ANALYZE the results of your experiment?
(2 part answer)
It means to figure out whether your hypothesis was right or wrong AND explain what you learned.
500
These are example of which state of matter? 
Plasma
500
Which image shows HIGH density and is mostly likely to SINK?
Image #3
500
The changes on the LEFT are _______________
The changes on the RIGHT are ______________
Left- Physical
Right- Chemical
500
The pics on the LEFT are examples of ___________
The pics on the RIGHT are examples of __________
Left: acids
Right: bases
500
What part of the scientific process is this? 
A diagram