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What kinds of particles make up an atom?
The electron cloud surrounding the nucleus of an atom...
Silver is a metal that can be melted to form jewelry. As the silver melts, what happens to the atoms that make up the solid?
In which two phase changes involving water does the motion of water molecules INCREASE?
a. protons, neutrons, and electrons
B. an electron
Protons and Neutrons
C. is mostly empty space
Protons = positive
Electrons = negative
Neutrons = neutral (no charge)
Electrons travel in 3D paths in the electron clouds.
Less than 1%
99%
Protons and electrons
Near the speed of light
They vibrate back and forth in one place.
a. Decreases
B. They move faster
increases
Temperature (energy) Changes
Heat/Cooling
Gas, Liquid, Solid
Solid and liquid
Plasma
C. The melting of ice and evaportation of water
X = Gas
Y = Solid
Z = Liquid
Carbon and Oxygen
Xenon and Fluorine
Calcium and Chlorine
Silver, Nitrogen, and Oxygen
Copper, Sulfur, and Oxygen