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16 Cards in this Set

  • Front
  • Back

charge of a proton

positive

charge of a neutron

neutral/no charge

charge of an electron

negative

which subatomic particles are located in the nucleus?

protons and neutrons

Which subatomic particle identifies an element?

protons

The atomic number of an element indicates the number of

protons

In a neutral atom, the number of ______________ = the number of _______________.

protons, electrons

The mass number is indicated by the sum of _________________ and ______________.

protons, neutrons

What is the difference between mass number and atomic mass?

mass number- protons and neutrons added together


atomic mass- average of all the isotopes given to you

What is the ray that travels from the anode to cathode?

canal ray

What is the ray that travels from the cathode to anode?

cathode ray

What is the charge on the anode and the cathode?

positive

isotope

atoms that have same number of protons but different number of neutrons

If the number of neutrons changes, what else will change for an element?

the isotope

Why are isotopes chemically alike?

because they have identical numbers of protons and electrons

What unit is used to measure atomic mass?

AMU