history of matter
types of matter
properties of matter
phases of matter
gases
100
What is chemistry the study of?
matter
100
What is the type of pure substance that has multiple types of atoms?
Compounds
100
Name a physical property
texture, color, mass, density, boiling point, melting point, etc
100
What phase of matter has neither definite shape nor volume?
gas
100
When you push a piston of a syringe, why is it that you feel resistance?
Pressure increased
200
Alchemists were early scientists whose goal was...
to turn lead into gold, explore properties of matter
200
Name an example of a heterogeneous mixture.
Sand, Soil, etc
200
Name a chemical property
Toxicity, nutrition, flammability, etc
200
What would a freezing curve look like? Please draw it.
200
If a balloon was subject to high temperatures, what would you expect the balloon to do?
Get larger/pop
300
Why was Lavoisier so important to chemistry?
He kept detailed notes/records
300
What is an example of chemical change?
Digestion, burning, rusting, etc.
300
What property might you use to separate sale from water?
Boiling point
300
During the process of melting, the temperature changes. True or False?
false
300
Why does volume decrease when temperature decreases?
Gas particles move less
400
Name an example of a homogeneous mixture.
Air, salt water, sugar water, etc
400
Calculate the percent mass or iron if your sand mass is 5 g, salt mass is 10 g, and total mass was 21 g.
28.6%
400
How do the slants on a heating curve show an increase in kinetic energy?
Temperature is average kinetic energy
500
Draw a particulate drawing of a homogeneous mixture
500
Calculate the percent error if your value for mass was 40 g but it was supposed to be 50 g.
20%
500
Why does putting salt in pasta water make the cooking process faster?
Salt raises the boiling point of water.