Question

Define:
Pure Substance
Elements
Metals
Non-metals
Metalloids
Compounds
Mixture
Homogeneous Mixture
Heterogeneous Mixture

Answer all these perfectly and don't send any rubbish unless I will report.​

Answer 1

I can’t tell all but;

Elements are 1 molecules and they can’t be broken down in small substances.

Metals are substances which are good conductors of heat and electricity.

Nonmetals are substances which are bad conductors of heat and electricity (there are some exceptions like graphite)

Matalloids are substances which have characteristics of both metals and non metals.

Compound are mixtures of 2 different elements combined by a chemical change.

Answer 2

Answer:

pure substance:Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. Pure substances are further classified as elements and compounds. An element is a substance that consists of only one type or kind of atom.

Element: The entities which contain only one kind of atoms are known as elements

Metals: are the materials which are hard lustrous malleable ductile Sonorous and good conductor example gold silver copper and iron.

Non-metals: the material which are dull in appearance break down into powder mass on tapping with hammer not sonorous and poor conductor of heat and electricity are called non metals example sulphur carbon oxygen phosphorus etc

Metalloids: metalloids possess character of both metals and non-metals.

compound: A compound is a material formed by chemically bonding two or more chemical elements. The type of bond keeping elements in a compound together may vary: covalent bonds and ionic bonds are two common types. The elements are always present in fixed ratios in any compound.

Mixture:a mixture is a material made up of two or more different substances which are not chemically combined. A mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Homogeneous mixture:A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution.

Heterogeneous Mixture:A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. ... A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers. Each of the layers is called a phase.

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