What is a chemical reaction? Examples of chemical changes, physical changes, and some gray areas. Chemical equations of chemical reactions.Balancing equations. Balancing ionic equations with polyatomic ions. Balancing combustion (burning) equations. Balancing by overview. A chemical reaction is material changing from a beginning mass to a resulting substance. A chemical equation is a way to describe what goes on in a chemical reaction, the actual change in a material. Back to the top of Reactions. Chemical reactions, also called chemical changes, are not limited to happening in a chemistry lab. A silver spoon tarnishes. Ag2S An iron bar rusts. 2 Fe2O3 Methane burns. An antacid (calcium hydroxide) neutralizes stomach acid (hydrochloric acid). CaCl2 + 2 H2O Glucose (simple sugar) ferments to ethyl alcohol and carbon dioxide. 2 C2H5OH (ethyl alcohol) + 2 CO2 Alcohol plus oxygen becomes vinegar and a molecule of water. Here are some examples of changes that are NOT chemical reactions. Easy. or
The Business Podcasts are interviews focusing on working life in the UK. The podcasts offer authentic listening practice for you to use with – or recommend to – your business English students. Episode 1: Nils, on working life in the UK – Pre-intermediate Download Listening Worksheet Tapescript Episode 2: Marta, on working life in the UK – Pre-intermediate Download Listening Worksheet Tapescript Episode 3: Boris, on working life in the UK – Upper Intermediate Download Listening Worksheet Tapescript Episode 4: Linda, on working life in the UK – Intermediate Download Listening Worksheet Tapescript Episode 5: Alex, on working life in the UK – Upper Intermediate Download Listening Worksheet Tapescript Episode 6: Armand, on working life – Advanced Download Listening Worksheet Tapescript Episode 7: Francesca, on working life – Pre-intermediate Download Listening Worksheet Tapescript Episode 8: Bea, on working from home – Advanced Download Listening Worksheet Tapescript Download Listening Worksheet Tapescript Download Listening
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How do I get to the zoo?
How do you get to the zoo? Vocabulary I. Revision Video II. Locations III.Now look at the map below and complete the dialogs. Pat: Excuse me. Jim: It's Town Hall. Pat: Thanks. Jim: It's the Korean restaurant. Pat: That's great! Jim: Yes, there's one Palm Street and Queen Avenue. Pat: How convenient! Can you tell me where the theater is? Jim: Sure. Pat: Is it the newsagent and the school? Jim: Excactly, right the chemist. Directions IV. 1. B: It's on the right across from the police station. B: Turn left and go straight down 5th. B: Go to the corner of 3rd. B: Turn left on Main St. and go past the City Court. 2. B: Turn left on Oak Street. B: Go past City Park and turn right on 4th. B: Turn left and goo the corner of 1st. B: It's on the right. 3. B: Turn right on 5th. B: Go past State college. B: Go two blocks on 5th. B: Turn left and go straight down Oak St.
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Speaking Actvities: Get Speaking task sheets for FCE, CAE, CPE, BEC, IELTS, BULATS
Each week we publish a free, photocopiable Get Speaking Task Sheet. To download and try this week's speaking activities place your cursor over the link below. Right-click (Windows) or hold down the mouse button (Mac OS) and then choose Save Target As from the pop-up menu. In the Save As dialogue box, specify a name and location for the PDF file, and then click Save. Right Click, Save Target As >> Download Task Sheet If you have trouble downloading the task sheet contact us with your email address and we will forward the current edition to you. Download all Get Speaking Sheets Each week we publish a Task Sheet from our archive. Speaking Activities: Exam Practice These activity sheets aim to help teachers teach speaking skills to upper-intermediate to advanced level English students.
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