An element is a pure substance made up of only one type of atom.
A molecule is the smallest unit of a compound that retains its chemical properties.
An element is a mixture of two or more substances.
An element is a solid at room temperature.
Water (H2O)
Oxygen (O)
Salt water
Silver nitrate (AgNO3)
A compound is a substance formed when two or more elements chemically combine.
A mixture is a combination of substances where each retains its properties.
A compound is a single type of atom.
A compound is a heterogeneous mixture.
Oxygen (O)
Water (H2O)
Sand
A mixture is a combination of two or more substances where each retains its own properties.
A mixture is formed when two or more elements chemically combine.
A mixture is a substance with only one type of atom.
A mixture can only be solid.
Compounds have elements chemically combined, while mixtures have substances physically mixed.
Compounds can only exist as gases, while mixtures are liquids.
Compounds can be seen with the naked eye, mixtures cannot.
There is no difference.
No, elements cannot be broken down into simpler substances by chemical means.
Yes, elements can be broken down by physical means.
Yes, elements can be broken down by filtering.
Elements decompose on heating.
No, compounds are permanent.
Yes, compounds can be separated into their elements through chemical reactions.
Only if they are gases.
Distillation
Filtration
Chromatography
Evaporation
Filtration
Using a magnet
By dissolving sulfur in water
By melting the mixture
A homogeneous mixture has a uniform composition throughout, like air.
A homogeneous mixture is one where the substances remain distinct.
A homogeneous mixture has visible different parts, like sand and pebbles.
A uniform mixture like air.
Only liquids can be heterogeneous.
A heterogeneous mixture has a non-uniform composition, like a salad.
A mixture where gases are present.
A molecule is the smallest unit of a compound that retains its chemical properties.
A molecule is always broken down in compounds.
Molecules are only present in elemental gases.
Most metals are solid at room temperature.
Most metals are liquids at room temperature.
Most metals are gases at room temperature.
Most metals are plasma at room temperature.