write the names of the substances found around you and classify them into solids, gases and elements, compounds and mixtures (minimum 20 substances, no maximum limit )
Answers
Answer :
Substances are composed of pure elements or chemically bonded elements, whereas mixtures are composed of nonbonded substances.
Key Points
Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.
A chemical substance is composed of one type of atom or molecule.
A mixture is composed of different types of atoms or molecules that are not chemically bonded.
A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.
A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.
Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation, and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.
Key Terms
mixture: Something that consists of diverse, nonbonded elements or molecules.
element: A chemical substance that is made up of a particular kind of atom and cannot be broken down or transformed by a chemical reaction.
substance: A form of matter that has constant chemical composition and characteristic properties. It is composed of one type of atom or molecule.
Answer:
Hydrogen gas.
Gold metal.
Sugar (sucrose)
Baking soda (sodium bicarbonate)
Ammonia.
Diamond.
Copper wire.
Silicon chip.