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Y11 Chemistry Basics

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Y11 Chemistry Basics

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Module Worksheet Solutions

- https://docs.google.com/document/d/1tDiR6HgYL241alWeukmN3dUDuDKZ3M1XeEFE7
8SJdkA/edit (2023 Y11 Chem Syllabus Notes)
- CHEM Term 2 Document; CHEM Term 3 Document

PRE 1.1 Classifying Matter 😊
PRE 1.2 Methods of Separating Mixtures 😐
PRE 1.6 Classifying Elements 😐
HSC 1.17 Nuclear Chemistry 😐
PRE 1.9 Ionic and Covalent Bonding 😡
PRE 1.16 Structure, Bonding and Properties 😡
PRE 1.17 Naming Ionic and Covalent Compounds 😐
PRE 2.10 Trends in the Periodic Table 😐
PRE 2.13 Chemical Calculations 😊
PRE 2.14 Calculating Reacting Quantities 😡
PRE 3.7 Comparing the Melting Point and Boiling Point of Water with those of Other
Substances
😐
PRE 3.10 Structure and Bonding 😐
PRE 3.16 Measures of Concentration 😐
PRE 3.17 Molarity Calculations 😡
PRE 3.20 Precipitation Stoichiometry 😐




.・゜-: ✧ :-・‥…━━━━━━━☆ 1 ☆━━━━━━━…‥ ・-: ✧ :-゜・.

,01 Feb | Properties of Matter

- https://docs.google.com/presentation/d/11mgwYuOBBhxUvYCgGbmr-0OhYq-gs-ZBM4n
GtHlId8I/edit#slide=id.p5

- Matter has mass and occupies space
- Everything in the universe is either mass or energy

Particle Theory of Matter
- Matter is made up of atoms and molecules
- Particles of matter are constantly moving

Solid Liquid Gas

Closely packed/rigidly together Fairly packed close Widely spaced

Vibrate in fixed position Vibrate in relation to Move in rapid, random straight line
each other motion, particles move independently




✧༺ 2 ༻✧

,Matter FlowChart




- Pure substance > compound: CO2(g) has constant composition with a ratio
- If that ratio is a varied variable, then it’s a mixture
- A homogenous mixture, e.g. juice with 3 different liquids (because all liquid)

Pure Substances
- Have distinct measurable properties (e.g. melting and boiling points, reactivity, density)
- Chemically bonded together
- Cannot be separated into two or more substances by physical means

An element is a pure substance that cannot be decomposed into simpler substances
- Only 1 type of atom
- You can use a Hofmann voltameter to separate compounds into elements. The ratio
can be visible in the tubes: the amount of compressed gas (L) will be in the right ratio

Atom & Periodic Table Revision
- Subscript is number of protons = electrons
- Superscript (atomic number) minus subscript (atomic mass) = number of neutrons in
nucleus
- Metals in the green stairs are semi-metals




✧༺ 3 ༻✧

, Compounds & Mixtures
- Compounds have different properties from those of the elements they contain.
- Can turn into a mixture using energy

- Mixtures can be separated physically
- Composed of two or more pure substances physically combined together
- E.g. homogeneous mixtures can use filters to separate substances
- E.g. a teaspoon of salt in a litre of water forms a homogeneous mixture because the salt
is evenly distributed throughout the water.
- Solutions (one or more solute dissolved in a solvent).

- E.g. heterogeneous mixtures: something with iron, use magnet to remove




Mixture vs Compound vs Element




✧༺ 4 ༻✧

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May 8, 2024
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