Are the particles of different substances the same or different?
Answers
Answer:
Particles - definitions
Atom
The smallest particle of an element.
Scientists originally thought that atoms could not be split up, but this is not the case.
Molecule
A cluster of non-metal atoms that are chemically bonded together.
The atoms in a molecule are joined by covalent bonds.
The atoms always join in fixed ratios and molecules have a specific formula, eg H2O or N2.
There are molecules of compounds (eg CH4) and molecules of elements (eg O2).
Element
A pure substance that is listed on the periodic table and only has one type of atom in it.
There are over 100 elements.
Most are metals, a few are semi-metals, and the rest are non-metals.
Compound
A pure substance made from more than one type of element chemically bonded together.
Elements bond in fixed ratios and so can be represented by a chemical formula. For example, sodium chloride has the same number of sodium ions and chloride ions, so its formula is NaCl; whereas water is always made from twice the number of hydrogen atoms as oxygen atoms, so it is H2O.
Mixture
An impure substance made from different elements or compounds.
Mixtures can usually be separated by physical techniques such as filtering and distillation.
Air is a mixture that contains the elements nitrogen, oxygen and argon, and also the compound carbon dioxide.
Answer:
They are different for each type of solid/liquid/gas
Explanation: