An object that is more dense than water will float or sink in water?
What is sink?
100
An object that is less dense than water will float or sink in water?
What is float?
100
When something goes from a liquid to a solid what two things happens to the molecules?
What is they slow down and move closer together?
200
Groups of atoms make up
What are Molecules?
200
This is a change to something in which the molecules do not change
What is a physical change?
200
The density of water is
What is 1 g/ml?
200
The formula for finding density is
What is density=mass/volume?
200
Who is your favorite science teacher?
Who is Mrs. Dixon?
300
These are negatively charged and can be found orbiting around the outside of an atom.
What are electrons?
300
Would burning is an example of a
What is chemical change (or chemical property)
300
What describes the amount of space something will take up?
What is volume?
300
What describes the amount of matter in an object?
What is mass?
300
In order for a substance to go from a liquid to a gas, thermal energy (heat) must be
What is gained?
400
These two things are found in the nucleus of an atom.
What are protons and neutrons?
400
This is a change in something where the molecules do change into something new.
What is a chemical change?
400
calculate the density of a liquid that has a volume of 341 ml. and a mass of 330 grams.
What is 0.97 g/ml?
400
If you lost an object in a pool that has a density of 1.23 g/ml where would you look for it?
Where is on the bottom of the pool?
400
In order for a substance to go from a gas to a liquid, thermal energy (heat) must be
what is lost (or taken away)?
500
Oxygen has this many protons.
What is 8?
500
Evidence that a chemical change has happened could be
What is color change, temperature change, production of a gas, production of a solid.
500
Describe how you would figure out using density if two objects were both made out of the same material?
blah blah blah
500
Draw on the board a diagram showing what happens to cold water when it is put in a cup of room temperature water. Show molecules and motion lines.
on board
500
Why is ice less dense than liquid water?
What is because of the special bonds water forms with itself resulting in hexagonal shaped structures which take up more space, making the ice less dense than water.