Summaries after sample
, 1.1 Particles
1.4 Mixtures • All matter is made of atoms.
• Atoms contain protons, neutrons, and
• Mixtures contain two or more substances electrons.
not chemically bonded.
• Protons and neutrons are in the nucleus;
• Components are not in fixed ratios. electrons move around it.
• Substances retain their own properties. • Atoms are electrically neutral.
• Mixtures can be separated by physical
methods.
Sample Unit 1:
Atoms
Summaries after sample
1.2 Elements
1.3 Compounds
• Elements consist of only one type of atom.
• Compounds form when elements chemically bond. • Each element has unique properties.
• Compounds have different properties from their • Elements are arranged on the Periodic Table.
elements.
• Some elements exist as diatomic molecules.
• Compounds are pure substances with fixed ratios.
• Compounds can be broken down by chemical means.
GR8 NS T2 Mindmap Doc Scientia
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, Sample
Summaries after sample