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WorksheetsLesson 26!
Total questions: 8
Worksheet time: 6mins
What is a atom? Why did Democritus use this name?
Atom is a Greek word meaning "Uncuttable"
Atom means "Tiny"
Atom- Made of 5 or more elements
Atom- Made of 1 element
Who were Alchemists? What were they trying to do? What process did they use?
Alchemists- Chemists
Trying to create matter
Alchemist- Physicians
Trying to create gold
Process- Transmutation
Who was Lavoisier? What did he do for chemistry?
Norwegian Chemist
Wrote the first ever chemistry book!
French Chemist
Wrote a book about physics
Made the Law of conservation of matter and defined the job of a chemist.
Who was Dalton? What was his theory? About Compounds?
English chemist
Elements = all of the same atoms
Elements= 5 different atoms
Compound = Atoms combined in specific portions to make a molecule
What's a chemical Reaction? Give a example
A process by which substances are changed into new substances with new properties
Baking soda + vinegar = co2
Models we have used/ will use
diagrams
periodic table
Clay+Toothpicks
Chemical Formulas
What's the chemical equation for ozone production?
O+O2>03 (> means yield)
O3+O2>05
How can you tell in a chemical equation how mass is conserved?
The number of atoms in each element is the same on each side
The number of atoms in each element isnt the same on each side
