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Flashcards unit 1.2 Compounds
Fichas del conjunto (20)
- 1What are compounds?Compounds are substances made of lattices or identical molecules with two or more types of atoms.
- 2What are some examples of compounds?Water, salt, candle wax, vegetable oil,
- 3What are some compounds made up of?Some compounds are made up of molecules
- 4What are properties?Properties are a unique set of characteristics.
- 5How many elements is the human body made up of?The human body is made up of 16 elements.
- 6What are the six common elements, the body is made up of?Oxygen-65%
Carbon-18%
Nitrogen-3%
Calcium-1.5%
Hydrogen-10%
Phosphorus-1% - 7What are some examples of compound lattices?Table salt and beach sand.
- 8How is each molecule made up?Each molecule is made by combining different numbers of the same elements, oxygen, hydrogen and carbon.
- 9Are all molecules in any compound identical?Yes, they are identical in size, shape and number of atoms.
- 10What is the scientific name for table salt?Sodium chloride
- 11What is the chemical formula of table salt?The chemical formula of table salt in NacI
- 12What is the chemical formula for beach sand?The chemical formula for beach sand is SiO2.
- 13What is the scientific name for beach sand?Silica or silicon dioxide
- 14What are mixtures?Any combination of two or more elements and compounds.
- 15What is miscible?Liquids that can be mixed.
- 16What is immiscible?Liquids that do not mix.
- 17What are alloys?Mixtures of a metal with other metals or non-metals.
- 18What happens to these atoms at room temperature?They tend to be very hard solids at room temperature.
- 19How are the atoms placed in compound lattices?The atoms are very strongly bonded to each other.
- 20How many atoms does plastic contain?Plastic contains thousands of atoms.