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Chapter 20
Chapter 21
Chapter 7
Chapter 8
Misc
100
If an isotope of uranium 235, has 92 protons, how many protons does uranium 238 have?
92
100
Most of the elements in the periodic table are...
metals
100
The opposition to the flow of charges is...
resistance
100
Each end of a bar magnet is a...
Magnetic pole
100
negatively charged particle...
electron
200
What is the smallest particle into which an element can be divided and still be the same substance?
atom
200
The horizontal row on the periodic table is called...
period
200
What is ohms law?
r=v/i
200
A device that converts electrical energy into mechanical energy.
Electric Motor
200
central region of the atom...
nucleus
300
A unit of mass that describes the mass of an atom or molecule?
atomic mass unit
300
This element is importnt to living things...
oxygen
300
The rate at which charges pass a point is...
current
300
Groups of atoms in tiny areas.
Domains
300
particle that has a positive charge...
proton
400
The sum of protons and nuetrons in an atom?
mass number
400
These metals react with water to form hydrogen.
alkali metals
400
The outlets in your home provide...
Alternating current
400
A coil of wire with an electric current in it.
Soleniod
400
mendeleev arranged the particles by...
increasing atomic mass
500
Atom that has same number of protons but different numbers of nuetrons?
isotope
500
Transition metals are...
good conductors of thermal energy
500
What is the unit of measure for resistance?
ohms
500
Beautiful curtain of light.
Aurora
500
unlike charges do what
attract