Edexcel IGCSE Maths 復(fù)習(xí)筆記 5.1.4 Vectors - Modulus What is a vector? Vectors?have various uses in mathematics In mechanics vectors represent velocity, acceleration and forces At IGCSE vect...
Biomass The?biomass?of an organism (or of a sample of tissue from an organism) is: The mass of?living material?of the organism or tissue The?chemical energy?that is?stored?within the organis...
Photosynthetic Products The process of photosynthesis transfers?light energy?to?chemical energy?in biological molecules In ecosystems where?sunlight?and?water?is available, the process of ph...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 5.1.3 Vectors - Proving Things What are vector proofs? In?vector proofs?we use vectors, along with a few key ideas, to prove that things are true in geometrical diagram...
Required Practical: Investigating the Effect on the Rate of Respiration A?redox indicator?is a substance that changes colour when it is reduced or oxidised DCPIP?and?methylene?blue are redox...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 5.1.2 Vectors - Finding Paths Finding paths in vector diagrams It is important to be able to describe vectors by following paths through a geometric diagram The followi...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 5.1.1 Vectors - Basics What are vectors? A?vector?is a type of number that has both a size and a direction At GCSE we only deal with two-dimensional vectors, although i...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 4.18.1 Similarity - Areas & Volumes What are similar shapes? See Similarity – Lengths and know that: Equivalent?areas?are linked by an?area factor?(see below) Equiv...
Anaerobic Respiration Sometimes cells experience conditions with?little or no oxygen There are several consequences when there is not enough oxygen available for respiration: There is?no fin...
