1 / 7

Class Work Acids, Bases and Alkalis

Class Work Acids, Bases and Alkalis . Sunday 14 th October Leonora Etonyeaku 7D. Which acids do we normally find in the laboratory? Use the link to complete the slide with names and images.

keelia
Download Presentation

Class Work Acids, Bases and Alkalis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Class WorkAcids, Bases and Alkalis Sunday 14thOctober Leonora Etonyeaku 7D

  2. Which acids do we normally find in the laboratory? Use the link to complete the slide with names and images http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise2.shtml Dilute acids: Hydrochloric Acids, sulphuric acids, nitric acids. These are irritant acids and can cause a problem to your skin, blisters ore red skin. Do not touch. Wash the spill off. Concentrated acid are dangerous, and can spoil the skin if touched, so they can cut through the skin. Are corrosive.

  3. Which acids do we normally find in the home? Use the link to complete the slide with names and images http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise2.shtml Carbonic acids are usually in drinks, it’s basically the carbon in sodas and soft drinks/fizzy dinks. Ethanoic acids, like vinegar Ethanoic acids are also known as Acetic acid. Citric acids are in fruits, like orange, lemon. Ascorbic acids: are usually in citric acids, for example Vitamin C. Tannic acids are acids in tea, and are usually in coffee.

  4. What is a Base? http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise3.shtml Bases are materials that have an effect on acids deactivates them. They are usually metal oxides, metal hydroxides, and metal carbonates or metal hydrogen. Bases are insoluble, which means they do not dissolve in water. For example Copper Oxide, it reacts with acids, neutralizes and they don’t dissolve in water. They also react when mixed with fat and oil.

  5. What is an Alkali? http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise3.shtml An Alkali is also a base. It reacts with acids and it neutralizes them. The only difference is that it does dissolve in water. It is basically a base, but it is soluble.

  6. Which bases do we normally find in the laboratory? http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise3.shtml Metal Oxides: Metal Hydroxides Metal Carbonates Calcium carbonate: Copper Oxides Calcium hydroxide Potassium hydroxide: Calcium Oxide

  7. Which bases do we normally find in the home? Use the link to complete the slide with names and images http://www.bbc.co.uk/schools/ks3bitesize/science/chemical_material_behaviour/acids_bases_metals/revise3.shtml Sodium Hydroxide is usually found in home, especially in drain cleaners, oven cleaners. Ammonia, a base is widely found in cleaners. Ammonia is noticed by the smell that makes you choke. Other weak bases and alkalis are found in toothpaste, for brushing your teeth, baking powder, when baking something like a cake, and in antacid tablets which cure a stomach-ache. We use most of these everyday of our lives so we live with acids too. There are strong and weak bases, weak bases are ok to use while strong bases and alkalis can cause harm.

More Related