Show:
Properties of Matter
States of Matter
Physical and Chemical Changes
Mixtures and Solutions
Elements and Compounds
100
Anything that has mass and volume.
What is Matter?
100
Gases can expand taking up more space or do this to take up less space,
What is compress?
100
When food spoils, a physical or chemical reaction takes place.
What is chemical?
100
sand and water forms where the waves wash over the sand. is this an example of a solution or mixture?
What is mixture?
100
When sodium atoms and chlorine atoms are combined they make a ____________ of salt.
What is molecule?
200
Three properties of matter that can be observed.
What are size, shape, color, texture
200
For water, the condensation and boiling point is this.
What is 100 degrees Celsius?
200
Most matter does this when heated.
What is expands.
200
The universal solvent.
What is water?
200
Boron is this because each atom of boron contains exactly 5 protons.
What is an element?
300
To find density of a material, do this.
What is divide the mass by the volume?
300
The temperature at which something freezes or melts is the same-true or false?
What is true?
300
When water freezes its mass decreases-true or false?
What is false. It stays the same.
300
This is added to steel to make it stronger.
What is carbon?
300
changed through history as scientists learned more about it.
What is the atomic theory?
400
Two ways to measure volume.
What is length, times width times height or place object in water and see how much water is displaced.
400
When a gas releases energy it does this.
What is condenses?
400
Another name for a chemical change.
What is chemical reaction?
400
If you wanted to separate salt from water, what method would you use?
What is evaporation/boiling?
400
If an atom has the same number of protons and electrons, it is this.
What is neutral?
500
5 properties of matter that must be measured.
What mass, volume, density, weight, temperature
500
When matter takes in or releases energy, this changes.
What is temperature?
500
If iron has a mass of 519 grams and oxygen has a mass of 23 grams, the rust that is produced during a chemical reaction has a mass of what?
What is 542 grams.
500
Four different properties used to separate a mixture.
What are particle size, magnetism, solubility and boiling point.
500
This scientist first introduced the atomic theory.
Who is Democritus?