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Are these pure substances safe to consume? - Coggle Diagram
Are these
pure substances
safe
to
consume
?
Pure substances
Definition: a substance that cannot be seprated into other substances by physical methods, it is the simplest form.
It is only made up of one kind of atom with fixed structure.
Types of pure substance
Element: a substance that consists of only one type or kind of atom.
Eg: Hydrogen, helium, oxygen, gold, silver and iron.
Types of element:
main-group elements
nonmetals
metalloids
metals
transition metals
Compound: two or more elements that are chemically bonded together.
Eg: Water, carbon dioxide, methane, sodium chloride, glucose, sodium bicarbonate.
Types of compound:
Covalent
Ionic
Safe
Definition: Not causing harm
Safe = non-reactive?
Safe = reactive but not toxic?
Safe = not toxic but can be reactive?
Safe = stable?
Safe regarding human body, environment or other aspects?
Testing methods to determine safety
Using other chemicals to test
Using indicators to test
Test what?
Chemical properties OR
Reactivity
Toxicity
Heat of combustion
Bond formation
Physical properties?
Density
Boiling and melting points
Appearance
To determine what?
The makeup of the substance?
The bonding of the substance?
The functional group of the substance?
Consume
Drink
When?
After eating?
After drinking other substances?
After waking up or before sleeping?
How?
The method of drinking
Using paper straws
Using metal straws
Using wooden straws
Using plastic straws
What are the material of the cup
Ingest
Eat
With What?
Other food
Other drinks
Nothing else?
When?
After a meal?
After doing sports?
After waking up?
Method of eating
Using what to eat the substance?
Who is consuming?
Human?
Animal?
Other organisms
Microorganisms?
Living things?