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Physics (Grade 9 and 10) > Atoms > Flashcards

Flashcards in Atoms Deck (9)
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1

What are degenerate orbitals?

Orbitals of the same energy

2

Quantisized

The energy of the electrons is limited to specific values

3

Why is the shape of the electron important?

1. Occupy 3 dimensions
2. Calculated mathematically
3. Region you are most likely to find an electron

4

What is relative atomic mass (RAM)?

Based on the element's isotopes and the relative abundance of those isotopes ( how much of each occurs in nature)

5

What is an isotope?

Atoms of an element with the same number of protons but varying numbers of neutrons, and thus have varying masses.

6

What is the nucleus?

1. Where them ads of the atom is concentrated
2. Contains nucleons
3. Positively charged
4. Held together by a strong nuclear force

7

What are the main sub- atomic particles?

1. Protons
2. Neutrons
3. Electrons

8

What is the value of a.m.u?

1.66 x 10^-27

9

What is the carbon -12 atom?

The standard mass against which all other elements are measured