Materials- Lab apron, goggles, Hydrochloric acid, test tube holder, test tube, zinc, & two graduated cylinders.

Safety Precautions-Make sure lab apron and goggles are on during experiment, and be careful not to inhale fumes.

Procedure- First pour 5 ml of zinc into one of the cylinders. Then dump 10 ml of the hydrochloric acid in the other empty cylinder. Next place the test tube in the test tube holder (get a little longer test tube to be careful)! First dump in the 5 ml of zinc in test tube. Last dump in the 10 ml of hydrochloric acid (slowly). May not use all 10 ml of acid.

 

Questions

1. Could the reaction between Hydrochloric Acid and Zinc take place without any oxygen?

click here for the answer Yes!

2. How can you tell if a chemical reaction is taking place?

click here for the answer A change in temperature or color, light is given off,or gas is given off. A substance is formed.

3.What does Hydrochloric acid do to the things it comes in contact with?

click here for the answer Hydrochloric acid is a chemical makeup that eats, or burns things it lands on. Such as: clothes, skin, metal or wood.

Andreas Marggraf was the first discoverer of zinc. He discovered it in the year 1500 in Germany.

In 1500, a Portuguese sea captain Pedro Alveras Cabral explored the forest along the Amazon river. Cabral's men cut down a tree and found its wood was as red as a glowing coal from a charcoal brazier. They called it "Brazil" wood from the portuguese word for a brazier- hence the name of the country that Portugal later colonized Brazil.

In 1500, presses in about 250 cities printed between nine and ten million books. For the first time, books were cheap enough that many Europeans could buy them.

Leonardo da Vinci studied human anatomy to improve his drawing ability and produced detailed anatomical drawings.