Periodic Table

Past: Before I watched this video I knew that Dmitri Mendaleeve had some part in helping make the Periodic Table. The table also was separated into different groups/columns. Ordered by Atomic Number. Metal and gasses are in different groups.

Present: I learned that you can combine elements and make new elements. I learned that Chlorine was used as a weapon. But now it's used for pools. There are man made atoms.

Future: I liked the part of the video where they talked about Chlorine and how it was used as a weapon. I'd like to learn more about gold. 

Cite: http://pixabay.com/en/bullions-commodity-investment-154931/

Car/street safety

                                            Car/street safety

In cars safety has improved over time. Now of days cars are really safe. The driver and passengers seatbelt themselves so they don't fly out of the windshield while suddenly stopping/slowing down. If a car crashes an airbag is deployed so you don't hit anything. It helps other driver to use turn signals and blinkers. It's allows them to know to let you over if your switching lanes or to let your turn if you are going to turn. It always helps to have new wheels for better traction so if it's wet and icy and the road you don't slide around and hit another car or anything. You should always go the speed limit so you don't endanger any other drivers. Always stop at red lights. Always wait for people to walk across the cross walk.