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States of Matter
Describing Matter
Measuring Matter
Thermal Energy
Periodic Table
100
What is the point at which a liquid changes into a solid?
freezing poing
100
What would you describe the following properties chemical or physical? size, volume, density, shape, mass, temperature, state of matter
Physical properties
100
What is the amount of matter in an object?
Mass
100
What type of heat transfer involves electromagnetic waves that travel through empty space?
Radiation
100
What is the basic unit of matter?
Atom
200
What is the point at which a gas changes into a liquid?
Boiling point
200
What is the ability for a substance to change into a new substance?
Chemical Change
200
What is the term used to describe how much mass is in a substance compared to its volume?
Density
200
What causes the tectonic plates to continue to move?
Convection in the mantle
200
What is a pure substance that cannot be broken down any further into other substances?
Element
300
What is a change in state of matter, a physical or chemical change?
Physical Change
300
What are the two types of properties that we use to describe matter?
Physical properties and Chemical properties
300
What would change if you went to a different planet, your mass or your weight?
weight (gravitational pull is different on each planet based on its mass)
300
What is term used for the following examples: CO2, H2O, CO, NaCl, HCl, C6H12O6, O2?
chemical formula
300
What are two or more elements that are chemically combined?
Compound
400
What is added or removed from a substance that causes it to change its state of matter?
Heat energy
400
What is a substance that always has the same chemical make-up or composition?
pure substance (elements and compounds)
400
What is the method used to measure the volume of an irregular-shaped object?
Water (liquid) Displacement Method
400
What is the type of heat transfer that involves direct contact between molecules?
Conduction
400
How can you figure out the atomic mass of a substance?
protons +neutrons
500
What two things occur to molecules when you add heat energy to a substance?
move faster and spread out
500
What is the term used to describe a pure substance that is made up of two or more elements?
compound
500
How would you know if something would float in water if you had no access to water?
Density > 1.0 g/mL would sink Density < 1.0 g/mL would float
500
What is the average kinetic energy in a substance?
Temperature
500
What is a valence electron?
An electron on outer shell