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Classification of matter and properties.
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Homogeneous mixtures are classified in:
solutions and alloys
Heterogeneous mixtures are classified in:
suspensions and colloids
Mixtures are classified in:
Homogeneous and heterogeneous
Pure substances are classified in:
Elements and compounds
Is it solution/ suspension/alloy/ colloid? Chamomile tea
Solution
Is it solution/ suspension/ alloy/ colloid? Food coloring + water
solution
Is it solution/ suspension/ alloy/ colloid? Aluminum foil
alloy
Is it solution/ suspension/ alloy/ colloid? water and sand
suspension
Is it solution/ suspension/ alloy/ colloid? Milk
colloid
Is it solution/ suspension/ alloy/ colloid? Steel
alloy
Chemical or physical change: Iron rusting
Chemical change
Chemical or physical change: Baking brownies
Chemical
These are some evidences of a chemical change:
Light production, smoke, new color, bubbling, heat production.
Physical or chemical change: Fireworks explosion
chemical
Physical or chemical change: Boiling water
Physical
Physical or chemical change: Ice melting
Physical
Chemical or physical change: Rotten apple
Chemical
Chemical or physical change: Mowing the lawn
Physical
Chemical or physical change: Cutting your hair
Physical
Chemical or physical change? Mixing vinegar and baking soda
Chemical change
Flammability, toxicity, reactivity, acidity, rusting or oxidation are:
Chemical properties
Are characteristics involved when a substance interacts with another substance to change its chemical make-up or identity.
Chemical properties
What are 3 intensive properties?
density, state of matter, luster, malleability, ductility, conductivity, solubility.
Extensive property: Distance between two points
Length
Extensive properties: Amount of space occupied by an object.
Volume
Extensive property: Gravitational force exerted on an object.
Weight.
It's an extensive property: amount matter in an object.
Mass
Properties that do not depend on the amount of substance present.
Intensive
Physical properties that depend on the amount of substance present.
Extensive
Physical properties can be classified in:
Extensive and intensive properties
Characteristic of matter that can be observed (using your senses) or measured without changing the sample's composition.
Physical properties
A chemical combination of two or more different elements; can be broken down into simpler substances by chemical means
compounds
It's a pure substance that cannot be broken down into simpler substances by physical or chemical means.
Element
Is the study of the composition of matter, properties and the changes that it undergoes.
CHEMISTRY
Anything that has mass and takes up space:
Matter