Question

b) What is the chemical name of rust? /1 ________________________________________________________________________ c) Write down the word equation for rusting /2 ________________ + ________________ _______________ d) Write down three ways by which Ahmed could protect his cycle from rust. /3 ___________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _______________________________________________________________________ 3: a) Write down the word equation for burning. /1 b) Place a wax candle in a small tray of sand. Light the candle. /2 See what happens to the candle when you cover it with a jar. Use different sizes of jar to see if this affects how long the candle will burn for. Complete the following sentences with the correct words given below. candle oxygen wax burn The heat melts the _________________ which travels up the wick. The wax burns with the ____________________ from the air. The candle needs oxygen to ____________. If a jar is placed over the _____________________ it will soon stop burning 4: Magnesium burns in air to produce magnesium oxide. a) Write the word equation of the chemical reaction /1 b) If a sample of magnesium requires 15.0 g of oxygen to burn completely and forms 37.8 g of magnesium oxide, what is the mass of the sample of magnesium? /2 c) State law of conservation of mass. /1

Answer 1

Answer:

iron oxide

Rust is the common name for a very common compound, iron oxide. Iron oxide, the chemical Fe2O3, is common because iron combines very readily with oxygen -- so readily, in fact, that pure iron is only rarely found in nature.

Answer 2

Answer:

please try to get my answer please