Particles in atoms

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The atomic number tells us the number of -?- in the nucleus?
Protons
1 of 5
The mass number tells us the number of -?- plus -?- in the nucleus
Protons plus neutrons
2 of 5
Which number (mass or atomic) is always the same for a mass of an element?
Atomic number
3 of 5
Why do most atoms have a neutral charge?
As the number of (positive) protons equal the amount of (negative) electrons
4 of 5
What is the Atomic and mass number of hydrogen? Use a periodic table to help you
1- atomic number, 1- mass number
5 of 5

Other cards in this set

Card 2

Front

The mass number tells us the number of -?- plus -?- in the nucleus

Back

Protons plus neutrons

Card 3

Front

Which number (mass or atomic) is always the same for a mass of an element?

Back

Preview of the front of card 3

Card 4

Front

Why do most atoms have a neutral charge?

Back

Preview of the front of card 4

Card 5

Front

What is the Atomic and mass number of hydrogen? Use a periodic table to help you

Back

Preview of the front of card 5

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