Chemistry unit 1

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What is the atomic number equal to?
The number of protons.
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What is the mass number equal to?
The number of protons and neutrons.
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What is electronic structure?
The number of electrons on each energy level or shell.
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Why do atoms not have an overall charge?
The positive protons balance out the negative electrons.
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What is ionic bonding?
When a metal and a non-metal react. The metal is positively charged and gives electronsand the non-metal is negatively charged and takes electrons.
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What is covalent bonding?
Wwhen a non-metal and a non-metal react. They share electrons.
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What is limestone?
Calcium carbonate (CaCO3).
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How did limestone form?
Carbon dioxide was absorbed and dissolved into oceans and locked into sedimentary rock.
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How is cement made?
Powdered limestone + powdered clay (using heat)
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How is concrete made?
Cement powder + sand + crushed rock + water.
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What is limestone used for?
1. Building material
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Other cards in this set

Card 2

Front

What is the mass number equal to?

Back

The number of protons and neutrons.

Card 3

Front

What is electronic structure?

Back

Preview of the front of card 3

Card 4

Front

Why do atoms not have an overall charge?

Back

Preview of the front of card 4

Card 5

Front

What is ionic bonding?

Back

Preview of the front of card 5
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