AQA A Level Maths: Pure復習筆記2.7.1 Sketching Polynomials
Sketching Polynomials Sketching the graph of a polynomial Remember a polynomial is any finite function with non-negative indices, that could mean a quadratic, cubic, quartic or higher power ...
IB DP Chemistry: HL復習筆記4.1.1 Forming Ions
Forming Ions As a general rule,?metals?are on the?left?of the Periodic Table and?non-metals?are on the?right-hand?side Ionic?bonds?involve the?transfer?of electrons from a?metallic?element to a?non...
IB DP Chemistry: HL復習筆記3.2.3 Periodic Trends: Group 17 - The Halogens
Halogens The halogens These are the group 17 non-metals that are?poisonous?and include fluorine, chlorine, bromine, iodine and astatine Halogens are?diatomic, meaning they form molecules of?two?ato...
IB DP Chemistry: HL復習筆記3.2.2 Periodic Trends: Group 1 - The Alkali Metals
Alkali Metals The group 1 metals The group 1 metals are called the?alkali metals?because they form?alkaline solutions?with high pH values when reacted with water Group 1 metals are lithium, sodium,...
IB DP Chemistry: HL復習筆記3.2.1 Periodic Trends: Oxides Across a Period
Oxides Oxides across a period The?acid-base?character of the oxides provides evidence of chemical trends in the periodic table The broad trend is that oxides change from?basic?through?amphoteric?to...
AQA A Level Maths: Pure復習筆記2.6.2 Improper Algebraic Fractions
Improper Algebraic Fractions What are top-heavy (improper) rational expressions (or algrbraic fractions)? The?degree?of the numerator is?greater than?or?equal?to the degree of the denominato...
AQA A Level Maths: Pure復習筆記2.6.1 Rational Expressions
Rational Expressions (Algebraic Fractions) What are rational expressions? Rational?numbers are numbers that can be written as a fraction (quotient)Rational comes from?ratio?– a number is rat...
IB DP Chemistry: HL復習筆記3.1.6 Periodic Trends: Chemical
Metallic & Non-metallic Periodic trends can also be seen in the typical properties of metals and non-metals which are summarised below: The typical properties of metals and non-metals The typic...
IB DP Chemistry: HL復習筆記3.1.5 Periodic Trends: Physical - Electronegativity
Electronegativity: Definition Electronegativity?is the ability of an atom to attract a pair of electrons towards itself in a covalent bond This phenomenon arises from the?positive?nucleus’s ability...
AQA A Level Maths: Pure復習筆記2.5.4 Factorisation
Polynomial Factorisation What is polynomial factorisation? Factorising a polynomial combines the?factor theorem?with the method of?polynomial division The goal is to break down a polynomial ...
IB DP Chemistry: HL復習筆記3.1.4 Periodic Trends: Physical - Electron Affinity
Electron Affinity When atoms gain electrons they become negative ions or?anions Electron affinity (EA)?can be thought of as the opposite process of ionisation energy and is defined as The amount of...
AQA A Level Maths: Pure復習筆記2.5.3 Factor Theorem
Factor Theorem What is the factor theorem? The factor theorem is a very useful result about polynomials A?polynomial?is an algebraic expression consisting of a finite number of terms, with n...
