Chemistry Basics

  • Created by: polly177
  • Created on: 23-07-18 17:09
How many different atoms have been discovered by humans?
118
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What are atoms?
the smallest pieces of elements that can exist
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What is a compound in terms of atoms?
atoms that have been chemically combined together
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What is the minimum amount of different types of elements in a compound?
at least 2
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What are the four key features of a chemical reaction?
1. compounds are broken up or formed 2. at least one new substance is created 3. there is a measurable energy change 4. n
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What are reactants?
the chemicals reacting in a chemical reaction
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Which side of a chemical equation are the reactants put?
the left-hand side
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What are the products?
the chemicals that are forming in a chemical reaction
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Which side of a chemical equation are the reactants put?
the right-hand side
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What must symbol equations be?
balanced
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Why must symbol equations be balanced?
because atoms can't be created or destroyed
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Other cards in this set

Card 2

Front

What are atoms?

Back

the smallest pieces of elements that can exist

Card 3

Front

What is a compound in terms of atoms?

Back

Preview of the front of card 3

Card 4

Front

What is the minimum amount of different types of elements in a compound?

Back

Preview of the front of card 4

Card 5

Front

What are the four key features of a chemical reaction?

Back

Preview of the front of card 5
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