Pure substances and mixtures - Year 7

Front

___________ are the smallest unit of an element that maintains the properties of that element.

Back

Atoms

Front

An _______________ is made up of one or more of the same kind of atom chemically combined.

Back

element

Front

A _____________ contains a variety of elements and compounds that are not chemically combined with each other.

Back

mixture

Front

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

Back

pure substance

Front

A ______________ mixture is one that does not have a uniform composition.

Back

heterogeneous

Front

A _________________ mixture is one where the substances are evenly spread throughout.

Back

homogeneous

Front

Which of these is an element? Salt (NaCl), Water (H20), Oxygen (O), Carbon Dioxide (CO2)

Back

Oxygen (O)

Front

Which of these is a compound? Aluminium (Al), Carbon Dioxide (CO2), Nitrogen (N), Sand

Back

Carbon Dioxide (CO2)

Front

What is this? Options: Element, Compound, Homogeneous Mixture, Heterogeneous Mixture

Back

Homogeneous Mixture

Front

What is this? Options: Element, Compound, Homogeneous Mixture, Heterogeneous Mixture

Back

Heterogeneous Mixture