Bbc bitesize mixtures
Want to rate this material? Login here! Make a Comment Relate this resource Contact us. Physics Front Search:. Editor selections by Topic and Unit. K-8 Phys. This animated tutorial for gradespublished by the British Broadcasting Corporation, explores the molecular basis of compounds and mixtures. It is written in "bite-size" pieces so that adolescent learners can grasp the concepts more easily and connect information with prior knowledge.
Each page is supplemented with audio narration and illustrations. Learners will try to fuse or separate elements, giving them insight into the bonding process without introducing advanced vocabulary. They will also view animations of filtration and evaporation. The tutorial ends with a brief quiz that allows students to self-test their understanding. Please note that this resource requires Flash. Currently 0. Keywords: chemical bonding, chemical compounds, chemical reaction, covalent bonding, ionic bonding, mixtures Record Cloner: Metadata instance created June 27, by Caroline Hall Record Updated: February 13, by Lyle Barbato Last Update when Cataloged: October 9, Post a new comment on this item.
The Physical Setting 4D. All matter is made up of atoms, which are far too small to see directly through a microscope. The atoms of any element are like other atoms of the same element, but are different from the atoms of other elements. Atoms may link together in well-defined molecules, or may be packed together in crystal patterns. Different arrangements of atoms into groups compose all substances and determine the characteristic properties of substances.
Chemical elements are those substances that do not break down during normal laboratory reactions involving such treatments as heating, exposure to electric current, or reaction with acids. All substances from living and nonliving things can be broken down to a set of about elements, but since most elements tend to combine with others, few elements are found in their pure form. Substances react chemically in characteristic ways with other substances to form new substances with different characteristic properties.
London: British Broadcasting Corporation, October 9, London: British Broadcasting Corporation, The word 'pure' is used in chemistry in a different way from its everyday meaning.
The label means that the contents are just orange juice, with no other substances added. However, the juice is not pure in the chemical sense, because it contains different substances mixed together. In chemistry:. The substances in a mixture can be elements, or compounds, or both. Being part of a mixture does not change the chemical properties of the substances that are in it.
Mixtures can be separated by physical processes. These processes do not involve chemical reactions, and no new substances are made. Pure substances and mixtures The meaning of pure The word 'pure' is used in chemistry in a different way from its everyday meaning. In chemistry: a pure substance consists only of one element or one compound a mixture consists of two or more different substances, not chemically joined together The substances in a mixture can be elements, or compounds, or both.
Separating mixtures Mixtures can be separated by physical processes. The components of a mixture can be separated without chemical reactions.A mixture contains different substances that are not chemically joined to each other.
For example, a packet of sweets may contain a mixture of different coloured sweets. The sweets are not joined to each other, so they can be picked out and put into separate piles. A mixture of iron filings and sulfur powder can easily be separated using a magnet. The iron filings are attracted to the magnet but the sulfur powder is not. Dissolving is one way to make a mixture. For example, when salt is stirred into water, the salt dissolves in the water to make salt solution.
In a solution:. In salt solution, salt is the solute and water is the solvent. The particles of solute and solvent are completely mixed together. Science presenter Jon Chase defines the terms solute, solvent and solution. Diffusion is another way to make a mixture. Particles of different substances mix together during diffusion.
This happens:. Diffusion explains why the smell of cooking spreads through the house, and why a drop of paint spreads on its own through a jar of water. You can find out more about diffusion in this Physics study guide. Mixtures A mixture contains different substances that are not chemically joined to each other. A magnet pulling iron filings out of sulfur powder.KS2 Science lessons give pupils a chance to make interesting mixtures of various substances - and to take on the challenge of separating them!
All of this is done in experiments which investigate solvents, solutes and suspensions. This quiz is all about mixtures and how to go about separating them. Mixtures involve putting two or more substances together. Nursery children seem to love nothing as much as they love mixing. Mixing flour with raisins, sand with water, or pasta with rice: you will always find little children mixing different materials. Separating, on the other hand, doesn't seem to be as much fun - especially when all the different bricks have been mixed together!
But young children don't have all the fun - mixing substances and then trying to separate them can be an enjoyable challenge for you as well - and even for adults. You've had your free 15 questions for today.
Interested in playing more? You'll need to subscribe. To comply with the new e-Privacy directive, we need to ask for your consent - I agree - No thanks - Find out more. Join Us Login. The purpose of the paper of a tea bag is to filter the mixture of tea leaves and water. Mixtures KS2 Science lessons give pupils a chance to make interesting mixtures of various substances - and to take on the challenge of separating them! See what you've learned in your science lessons by trying this quiz.
If you evaporated sea water, leaving the salt behind, how could you collect the water?
By filtering. By condensation.
By dissolving. It would be impossible.BBC Bitesize KS3 Chemistry Introduction to atoms and elements
Allowing the steam from the evaporating water to collect on a cold surface would make the water vapour condense. The liquid could then be collected in a separate container. Which of the following would dissolve in water?
We dissolve soap in water every time we have a bath.Simple distillation is a method for separating the solvent from a solution. For example, water can be separated from salt solution by simple distillation.
This method works because water has a much lower boiling point than salt. When the solution is heated, the water evaporates. It is then cooled and condensed into a separate container. The salt does not evaporate and so it stays behind. Salt solution is heated. Water evaporates and its vapours rise. The water vapour passes into the condenser, where it cools and condenses. Liquid water drips into a beaker. All the water has evaporated from the salt solution, leaving the salt behind.
Every pure substance has its own particular melting point and boiling point. One way to check the purity of the separated liquid is to measure its boiling point. If it contains any dissolved solids, its boiling point will be higher than this.
Separating the solvent from a solution — simple distillation Simple distillation is a method for separating the solvent from a solution.Sign up with Facebook Sign up with Twitter. I don't have a Facebook or a Twitter account. The digital world was built on games, and there is no reason to keep that aspect of the digital world away from your eLearning initiatives, especially with all of the positive effects that gamification has on eLearning.
However, it is important to incorporate games that reinforce the context of the learning, not just building games to build them. It is perceived as the most effective training module for learning the complex subject matters in a safe environment. Research and publish the best content. Try Business. Join Free. Tag edtech elearning gamification utrgvedtech 1. Scooped by Mfuerey onto Science carrizal.
From www. A key stage 3 revision and recap resource for science, covering chemical reactions, compounds and molecules. It also covers mixtures and techniques for separating their ingredients, like distillation. Tweet Partager.
Separating Mixtures – KS3 Science
No comment yet. Sign up to comment. Your new post is loading Gamification is the use of game-mechanics and elements in non-game contexts. Via Nik Peachey. Nik Peachey 's curator insight, 3 OctoberA free or make a donation guide to gamification in your classroom.
Rescooped by Mfuerey from Educational Technology News. How Does Gamification Affect eLearning? Scooped by Mfuerey. A key stage 3 revision and recap activity for science, covering chemical reactions, compounds and molecules.
Dynamic Periodic Table. Interactive Web 2. Full descriptions. An interactive experiment in which children aged can heat and cool water to change it between its three states.If a substance does not dissolve in a solvent, we say that it is insoluble. For example, sand does not dissolve in water — it is insoluble.
Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered:. The slideshow shows how filtration works:. A beaker containing a mixture of insoluble solid and liquid. There is filter paper in a filter funnel above another beaker. The mixture of insoluble solid and liquid is poured into the filter funnel. The liquid particles are small enough to pass through the filter paper as a filtrate.
The solid particles are too large to pass through the filter paper and stay behind as a residue. Separating solids from liquids — filtration If a substance does not dissolve in a solvent, we say that it is insoluble. When a mixture of sand and water is filtered: the sand stays behind in the filter paper it becomes the residue the water passes through the filter paper it becomes the filtrate The slideshow shows how filtration works: previous.