Atoms, elements and compounds
Define and identify atoms, elements and compounds. Name compounds from their formula.
Atoms, elements and compounds
Define and identify atoms, elements and compounds. Name compounds from their formula.
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Lesson details
Key learning points
- Define atoms, elements and compounds
- Name compounds from word equations and formulae
- Understand that a chemical reaction involves rearranging atoms by the making and breaking of bonds
- Give word and symbol equations
Equipment
Periodic table
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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6 Questions
Q1.
Which is the correct symbol for carbon?
Ca
Co
Cu
Q2.
Match the definition to the term.
a substance made from one type of atom
two or more different elements chemically bonded together
two or more atoms bonded together
the smallest unit of matter
Q3.
What is the smallest unit of matter?
compound
element
molecule
Q4.
All 118 known elements are displayed in the .
Q5.
Calcium is added to hydochloric acid to produce calcium chloride and hydrogen. What are the two reactants?
calcium chloride
hydrogen
Q6.
Iron oxide breaks down into iron and oxygen. What are the two products?
iron oxide
oxide
6 Questions
Q1.
All diagrams show an element, except one. Which does not show an element?
5 individual black circles spaced apart
3 groups spaced apart, each containing 2 touching grey circles
9 grey circles all touching, arranged in a 3 by 3 square
Q2.
A substance that has two or more different elements chemically bonded together is a .
Q3.
Elements are determined by the number of in the nucleus.
Q4.
Match the example to the term.
air
water
oxygen
Q5.
The name of the compound that contains one potassium atom, one carbon atom and three oxygen atoms is .
Q6.
The formula for the compound that contains one potassium atom, one carbon atom and three oxygen atoms is ...
CKO3
O3KC
KCO3 (with the 3 as a standard case number)