Any particular isolated sample of a mixture has a definite chemical composition, but the general idea of a mixture, even of the same materials, implies variability in possible chemical composition.
no it is the physical combining of substances.
no
No...
The statement in the question is false. It is very common for two liquids to form a mixture that is also liquid, and, unless a chemical reaction occurs, a mixture of two gases always is also a gas.
A mixture
A mixture There are four types of mixtures: Alloy - homogenous metalic solid Solution - homogenous mix of two or more substances (not all metals) Suspention - not evenly mixed and will separate if left alone Colloid - Sorry, I always forget what this one is
Antoine Lavoisier
It doesn't have one. Shale is a mixture and doesn't always have the same composition. Only elements have chemical symbols
Substances in a mixture can be present in any amount. In a mixture, substances are only mixed physically and retain their chemical identity.
The statement in the question is false. It is very common for two liquids to form a mixture that is also liquid, and, unless a chemical reaction occurs, a mixture of two gases always is also a gas.
It is always a mixture of two substances: the solute and the solvent.
A mixture
Always :)
chemical change.
Caffeine is a chemical compound, not a mixture.
A mixture There are four types of mixtures: Alloy - homogenous metalic solid Solution - homogenous mix of two or more substances (not all metals) Suspention - not evenly mixed and will separate if left alone Colloid - Sorry, I always forget what this one is
chemical change.
True.
Antoine Lavoisier
you have to handle chemicals with care and ALWAYS be careful.