Flashcards: Introduction to Elements and Mixtures — 12 cartões

Atoms — smallest part?

Fundamental units of elements.

Chemical symbol — example?

O for oxygen, Na for sodium.

Element — composition?

Made of only one atom type.

Compound — formation?

Chemically combined different elements.

Periodic table — organization?

By atomic number, with groups and periods.

Groups — similar?

Elements share properties within a group.

Metals vs non-metals?

Metals conduct, non-metals do not.

Compound properties?

Different from constituent elements.

Mixture — separation?

Separated physically, no chemical change.

Distillation — principle?

Separate by boiling points.

Crystallisation — purpose?

Recover soluble solids by evaporation.

Physical techniques — basis?

Use physical properties, no chemical reactions.