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Which is the mass?
It's the amount of matter in an object
Which is the volume?
It is the amount of space than an object occupies
How do we calculate density?
By dividing the mass of an object by its volume
If the mass of a stone is 35 grams and its volume is 7 cubic centimeters. Which is its density?
It's 5 g/cm3
Which are the three basic properties of matter?
Mass, volume and density
Which other physical properties we can find in matter?
Hardness, solubility, thermal conductivity and electrical conductivity
A pure substance is...
A substance with only one component
What is a solution?
It's a homogeneous mixture made up of two or more liquids, or a liquid and a soluble substance
What kind of mixture is If we can see the different components?
A heterogeneous mixture
Which is the best way to separate a mixture of salt and sand?
Filtration and evaporation (DISSOLUTION)
When we separate liquids with differents boiling points we use this method
distillation
Give an example of homogeneous mixture
Ex. Milk with cocoa
Give an example of heterogeneous mixture
Ex. pizza
If the change can be reversed and doesn't form a new substanse... What type of change is?
A physical change
If the change can't be reversed and form a new substanse... What type of change is?
A chemical change
Oxidation is a ______ change
Chemical change
