短片 · 所有人免费

星图上每颗星都有短片

从最好的免费老师那里精选的短片。每个短片都在它的那颗星上,有现成闪卡的会配上闪卡,并带有Heddy 星级。

169个短片104个短片卡组476颗星

全部短片,每个都带有Heddy 星级,并标出它在你星图上的位置。

共 25 个短片
YouTube4:22

GCSE Chemistry - States of Matter & Changing State

Cognito化学
在你的星图上
gcse-chem-5-2-2-1States of matter and the forces between particles · GCSE
c1Particle model & states · KS3 Y7
▶ 观看
YouTube4:50

GCSE Chemistry Revision "Introducing Electrolysis"

在你的星图上
gcse-chem-5-4-3-1Electrolysis: the process · GCSE
▶ 观看
YouTube18:49

GENERAL CHEMISTRY explained in 19 Minutes

在你的星图上
gcse-chem-5-2-1-5Metallic bonding · GCSE
gcse-chem-5-2-1-1The three types of chemical bond · GCSE
▶ 观看
YouTube11:19

Orbitals, Atomic Energy Levels, & Sublevels Explained - Basic Introduction to Quantum Numbers

在你的星图上
gcse-chem-5-1-1-7Electronic structure · GCSE
▶ 观看
YouTube6:32

GCSE Chemistry - Paper Chromatography

Cognito化学
在你的星图上
gcse-chem-5-8-1-3Chromatography and Rf values · GCSE
▶ 观看
YouTube4:37

GCSE Chemistry Revision "Crude oil and Hydrocarbons"

在你的星图上
gcse-chem-5-7-1-1aCrude oil and hydrocarbons · GCSE
gcse-chem-5-7-1-1bAlkanes · GCSE
▶ 观看
YouTube4:32

GCSE Chemistry Revision "Required Practical 5: Rates of Reaction"

在你的星图上
gcse-chem-5-6-1-2Factors that affect the rate of reaction · GCSE
gcse-chem-5-6-1-1aMean rate of reaction · GCSE
▶ 观看
YouTube5:30

GCSE Chemistry - Crude Oil and Fractional Distillation

Cognito化学
在你的星图上
gcse-chem-5-7-1-1aCrude oil and hydrocarbons · GCSE
gcse-chem-5-7-1-2Fractional distillation and petrochemicals · GCSE
▶ 观看
YouTube5:47

GCSE Chemistry Revision "Balancing Chemical Equations"

在你的星图上
gcse-chem-5-1-1-1bNaming compounds and writing equations · GCSE
c52Balancing symbol equations · KS3 Y9
▶ 观看
YouTube3:42

GCSE Chemistry Revision "Required Practical 2: Carrying out a Titration" (Triple)

在你的星图上
gcse-chem-5-4-2-2Neutralisation and making salts · GCSE
▶ 观看
YouTube4:05

GCSE Chemistry Revision "Exothermic and Endothermic Reactions"

在你的星图上
gcse-chem-5-5-1-1Exothermic and endothermic reactions · GCSE
gcse-chem-5-5-1-2Reaction profiles and activation energy · GCSE
▶ 观看
YouTube3:27

GCSE Chemistry Revision "Reaction of Metals with Oxygen"

在你的星图上
gcse-chem-5-4-1-1Metal oxides: oxidation and reduction · GCSE
▶ 观看
YouTube4:48

GCSE Chemistry Revision "Electrolysis of Aluminium Oxide"

在你的星图上
gcse-chem-5-4-3-3Extracting metals by electrolysis · GCSE
▶ 观看
YouTube3:57

GCSE Chemistry Revision "Required Practical 3: Electrolysis"

在你的星图上
gcse-chem-5-4-3-4Electrolysis of solutions in water · GCSE
▶ 观看
YouTube3:16

GCSE Chemistry Revision "Fractional Distillation of Crude Oil"

在你的星图上
gcse-chem-5-7-1-2Fractional distillation and petrochemicals · GCSE
▶ 观看
YouTube4:34

GCSE Chemistry Revision "The Reactivity Series"

在你的星图上
gcse-chem-5-4-1-2The reactivity series · GCSE
▶ 观看
YouTube3:33

GCSE Chemistry - What is a Polymer? Polymers / Monomers / Their Properties Explained (2026/27 exams)

Cognito化学
在你的星图上
gcse-chem-5-2-2-5Polymers as very large molecules · GCSE
c29Polymers: long-chain molecules · KS3 Y8
▶ 观看
YouTube4:35

GCSE Chemistry Revision "Required Practical 6: Chromatography"

在你的星图上
gcse-chem-5-8-1-3Chromatography and Rf values · GCSE
c17Chromatography · KS3 Y8
▶ 观看
YouTube23:55

Bonding (Ionic, Covalent & Metallic) - GCSE Chemistry - long version

在你的星图上
c36Groups & periods · KS3 Y8
gcse-chem-5-2-1-5Metallic bonding · GCSE
▶ 观看
YouTube11:16

Types of Bonding (Ionic, Covalent, Metallic) - GCSE Chemistry Revision

在你的星图上
gcse-chem-5-2-1-4aCovalent bonds and small molecules · GCSE
gcse-chem-5-2-1-1The three types of chemical bond · GCSE
▶ 观看
YouTube4:17

GCSE Chemistry Revision "Elements, Compounds and Mixtures"

在你的星图上
c2Atoms, elements & compounds · KS3 Y7
c22Compounds vs mixtures · KS3 Y7
▶ 观看
YouTube2:36

GCSE Chemistry Revision "Properties of Hydrocarbons"

在你的星图上
gcse-chem-5-7-1-3aHydrocarbon properties and molecule size · GCSE
▶ 观看
YouTube6:03

GCSE Chemistry - Moles, Concentration & Volume Calculations

Cognito化学
在你的星图上
gcse-chem-5-3-2-5Concentration in grams per cubic decimetre · GCSE
ch1Moles — counting by weighing · GCSE
▶ 观看