Chemistry: Chemical Equations, Mixtures, and Atomic Structure

These flashcards cover fundamental concepts in chemistry related to chemical equations, mixtures, chromatography, and atomic structure.

What are chemical equations fundamental to?

Chemistry.

What are the molecules on the left-hand side of a chemical equation called?

Reactants.

What are the molecules on the right-hand side of a chemical equation called?

Products.

What must always be true about atoms in a balanced chemical equation?

There must always be the same number of atoms on both sides.

What method separates soluble solids from solutions?

Crystallisation and evaporation.

What is chromatography used for?

To separate different substances in a mixture.

What is the method called that separates mixtures containing liquids?

Distillation.

Who proposed the 'plum pudding' model of the atom?

JJ Thomson.

What did Rutherford's gold foil experiment demonstrate?

That atoms have a small, positively charged nucleus.

What was Bohr's contribution to atomic structure?

Proposed that electrons orbit the nucleus in fixed shells.