Question

Please answer this questions​

Answer 1

1) Lactobacillus delbrueckii.

2) The causes of corrosion require the presence of water and oxygen. Water can combine with carbon dioxide in the air to form carbonic acid, a weak acid. When this acidic solution reaches iron, two reactions occur. ... Free oxygen reacts with dissolved iron to form iron oxide, i.e. Rust.

3) Burning and melting of a candle.

Answer 2

Answer:

• Bacteria known as Lactobacillius

• Oxygen reacts with dissolved iron to form iron oxide, and iron oxide is rust.

• Burning of wax is an example of both physical and chemical change,because it includes melting of wax(physical change) and burning that produces Carbon di oxide and water vapour(producing new products,thus chemical change)