请到「后台-用户-个人资料」中填写个人说明。
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.2.4 Interpreting Chromatograms Identifying Mixtures Pure substances will produce only one spot on the chromatogram If two or more substanc...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.2 3 Separation Techniques 、 Simple Distillation This is used to separate a liquid and soluble solid from a solution (e.g., water from a s...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.2 2 Pure Substance vs Mixture Pure Substance vs Mixture In everyday language we use the word pure to describe when something is natural or...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.2.1 Element, Compound or Mixture Classify an Element, Compound or Mixture You need to know the following definitions Classify an El...
EDEXCEL IGCSE CHEMISTRY: DOUBLE SCIENCE 复习笔记：1.1.3 Solutions Solutions Terminology You need to know all the following terms used when describing solutions: Terminology Abo...
Edexcel IGCSE Chemistry: Double Science 复习笔记：1.1.2 Diffusion & Dilution iffusion & Dilution Diffusion and dilution experiments support a theory that all matter (solids, liquids ...
Edexcel IGCSE Chemistry: Double Science 复习笔记：1.1.1 The Three States of Matter The Three States of Matter The three states of matter are solids, liquids and gases A substance can ...
Edexcel IGCSE Physics: Double Science 复习笔记：8.2.3 The Life Cycle of Larger Stars The Life Cycle of Larger Stars A large star is one that is much larger than the Sun Stars that are larger...
Edexcel IGCSE Physics: Double Science 复习笔记：8.2.2 The Life Cycle of Solar Mass Stars The Life Cycle of Solar Mass Stars 1. Nebula All stars form from a giant cloud of hydrogen gas and du...
