What is two or more materials combining chemically?
100
Evaporation
What is the change of a substance from a liquid to a gas?
100
Liters (L) and Milliliters (mL)
What is the SI unit for volume?
100
Chemical change examples (3)
What kind of change is burning, rotting, digesting reacting?
200
Positive, negative, and no charge respectively
What charges do protons, neutrons, and electrons have?
200
Element
What is a pure substance that cannot be separated into simpler substances by physical or chemical means?
200
Condensation
What is the change of a substance from a gas to liquid?
200
grams (g), milligrams (mg), and kilograms (kg)
What are the units of mass?
200
Physical Change examples (3)
What is kind of change is melting, freezing, evaporation, condensation, and sublimation?
300
Valence electrons
What are the outermost electrons called?
300
Solution
What is a mixture of two or more substances?
300
Sublimation
What is the change of state from a solid to gas?
300
Meniscus
What is the curve at the surface of a liquid?
300
Physical changes vs. Chemical Changes
What is the original substance still exists, it has only changed in form and a new substance is produced?
400
Electron cloud
Where are the electrons located?
400
1) Homogeneous
2) Heterogeneous
1)What has the same uniform appearance and composition throughout?
2) What consists of visibly different substances or phases?
400
Plasma
What is ionized gas?
400
Inertia;mass
What is the tendency of an object to resist a change in motion and what is it measured in?
400
Physical Properties vs. Chemical Properties
What are properties that can be observed without chemically changing matter and that properties describe how a substance interacts with other
substances
500
1) The number of protons in an atom
2) The number of protons and neutrons in an atom
1) What is the atomic number?
2) What is the atomic mass?
500
Suspension
What is a heterogeneous mixture of large particles?
500
1) Solids
2) Gases
3) Liquids
1)What are particles that are tightly packed, & vibrating about a fixed position?
2)What are particles of gases that are very far apart and move freely?
3)What are particles that are tightly packed, but are far enough apart to slide over one another?
500
Weight, Newtons (N)
What is a measure of the gravitational force exerted on an object and it's SI unit?
500
1)Density
2)MASS/VOLUME
1)What is physical change?
2)What is the formula for density?