Classification of Substances and Properties Quiz

Chemical property refers to the ability of a substance to undergo chemical reactions, such as burning (flammability).

Solids maintain their shape and volume due to strong intermolecular forces holding their particles together.

Chemical changes involve the formation of new substances with different chemical compositions, such as the rusting of iron due to its reaction with oxygen in the air.

Reactivity refers to the tendency of a substance to undergo chemical reactions with other substances, resulting in the formation of new compounds.

Elements are substances made up of only one type of atom and cannot be broken down further by chemical means.

Bases often feel slippery or soapy to the touch due to their ability to react with oils and fats, forming soap.

Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Heterogeneous mixtures are those in which the components are visibly distinguishable, like sand and iron filings which can be easily separated.

Metals are typically malleable and ductile, meaning they can be hammered into thin sheets and drawn into wires, but they are not brittle.

Covalent bonds are formed by the sharing of electrons between atoms, resulting in the formation of molecules.

Viscosity is the measure of a fluid's resistance to flow; substances with high viscosity flow slowly, while those with low viscosity flow quickly.

Deposition is the phase transition in which gas transforms directly into solid without passing through the liquid phase.

The mole is the SI unit for measuring the amount of a substance and is defined as the amount of substance that contains as many elementary entities (atoms, molecules, etc.) as there are atoms in 12 grams of carbon-12.

Physical properties, such as boiling point, can be observed or measured without changing the substance's chemical composition.

Reactivity with acid is a chemical property that describes a substance's ability to undergo chemical reactions with acids, often resulting in the release of gas, heat, or other observable changes.

Elasticity is the ability of a material to return to its original shape after being stretched or compressed.

The pascal (Pa) is the SI unit for pressure and is defined as one newton per square meter.