Chemistry 2A - Atoms and Compounds

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What do the mass number and atomic number mean?
Mass Number: Total number of protons and neutrons Atomic Number: Total number of protons (same as number of electrons)
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What are the relative masses of protons, neutrons and electrons?
Proton: 1 Neutron: 1 Electron: very small
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What is a compound?
It is when atoms of two or more elements are chemically combined together. It is difficult to separate the two original elements out again.
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List the main properties of ionic compounds.
They have a regular lattice structure. They all have similar properties.
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Explain what is meant by the term isotope.
Isotopes are: different atomic forms of the same element, which have the same number of protons but a different number of neutrons.
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Other cards in this set

Card 2

Front

What are the relative masses of protons, neutrons and electrons?

Back

Proton: 1 Neutron: 1 Electron: very small

Card 3

Front

What is a compound?

Back

Preview of the front of card 3

Card 4

Front

List the main properties of ionic compounds.

Back

Preview of the front of card 4

Card 5

Front

Explain what is meant by the term isotope.

Back

Preview of the front of card 5

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