Log 1 q2
Questions of the Week
What is the name of the video that we are watching in class for chapter 7.
What is the first element that is discussed in the video?
What are four examples of substances that are discussed in the text?
What does the subscript on a chemical compound represent?
What is an example of a heterogeneous mixture?
Scientist of the Week
- I was born on December 18, 1856. In 1897.
- I showed that cathode rays were composed of previously unknown negatively charged particles.
- I am credited with the discovery and identification of the electron, the first subatomic particle to be discovered.
- I am credited with the discovery and identification of the electron, the first subatomic particle to be discovered.
- I along with Francis William Aston, were the first use of mass spectrometry and led to the development of the mass spectrograph.
- What does an atom need to do in order for it to react chemically?
- What is the first man made metal alloy?
- What is the largest substance in a solution called? (Give an example.)
- What is another name for sodium chloride and what is its chemical formula?
- Can a solution have a chemical formula? Why or why not?