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Vocabulary
Physical or Chemical?
States of Matter
Scientific Method
Random
100
This describes anything that has weight and takes up space. Examples include: dogs, doors, doughnuts, and so on.
Matter
100
Glow sticks, vinegar and baking soda, stomach digestion, fire, rust.
Chemical Change
100
What are the three states of matter?
Solid, liquid, gas.
100
What is the scientific method used for?
To plan and carry out scientific experiments. So other scientists can repeat the experiment.
100
When we mix milk and vinegar together and get chunks, should it weigh more, less, or the same before and after the experiment?
The same! Products and reactants in a chemical change weigh the same.
200
The amount of matter in a substance. For example: A grown man vs. a baby.
Mass
200
Breaking toothpicks, freezing water into ice cubes, koolade in water, salt water, coloring a page.
Physical Change
200
Which state of matter has molecules that move very slowly and stay very close together in a rigid structure?
Solid
200
This is an educated guess about what will happen.
Hypothesis
200
I have a bucket of legos that weighs 2 pounds. I just created an awesome tower. How much does it weigh? How much does it weigh when I knock it down?
2 pounds before, during, after. The pieces altogether weigh the same as the whole.
300
This measures how much mass an object has. For example, a bathroom scale can measure this.
Weight
300
How do you know something is a physical change?
Same substance, may change state (solid-liquid-gas).
300
What causes a substance to change from solid to liquid or liquid to gas?
Energy in the form of heat.
300
Tell me an experiment that would need to use the scientific method.
Any experiment!
300
I have a chunk of ice that weighs 15 grams. I left it on the counter overnight and now it's liquid. How much should the liquid water weigh?
15 grams. Melting or freezing water stays the same weight.
400
How much space a substance takes up. For example: A huge jar of spaghetti sauce has more of this than a small jar of spaghetti sauce.
Volume
400
How can you tell if something is a chemical change?
It becomes a new substance, changes color unexpectedly, unexpected temperature change, produces gas (bubbles), odor, produces light.
400
Give an example of a solid, a liquid, and a gas.
Answers may vary
400
What types of questions should you ask in the scientific method?
Questions you can find an answer to. Reasonable--not crazy.
400
What is the difference between a solution and a mixture?
Mixture is easily separated. Solution is dissolved in a liquid.
500
How much matter is packed into a given space. For example, a golf ball and a ping pong ball are the same size, but have different "this".
Density
500
Striking a match to melt a block of ice into liquid water.
Chemical-Striking match. Physical-melting ice to water.
500
What is the water molecule called? BONUS: What does it look like?
h2o
500
What are the 5 steps of the scientific method?
Observation, question, hypothesis, experiment, conclusion, reflection.
500
What is the scientific law called when a substance weighs the same before and after a change (physical or chemical)?
Law of conservation of matter.