Alkali and alkaline earth metals conduct electricity well and form alkaline solutions when mixed with water. Carbon has six protons. In chemistry, the term inert refers to substances that do not react with other substances. The orange and yellow spheres in the model represent protons and neutrons. The elements highlighted in red have the same number of protons. Periods form horizontal rows and groups form vertical columns. All atoms contain at least one proton. Transition metals and poor metals differ in their reactivity. Fermium can be found in a science lab. To become positively charged, an atom must lose an electron.
1. The characteristics shared by all alkali metals and alkaline earth metals are that they conduct electricity very well, they are strong and shiny, and they form alkaline solutions when mixed with water. The correct answer is option c.
2. From the fact that carbon has an atomic number of 6, we can conclude that it has six protons. The correct answer is option a.
3. In chemistry, the term "inert" when referring to noble gases means that they do not react with other substances. The correct answer is option b.
4. In this model of an atomic nucleus, the orange and yellow spheres represent protons and neutrons, respectively. The correct answer is option b.
5. The elements highlighted in red have the same number of protons. The correct answer is option a.
6. A true statement is that periods form horizontal rows and groups form vertical columns in the periodic table. The correct answer is option a.
7. The true of all atoms is that they contain at least one proton. The correct answer is option d.
8. One key physical difference between transition metals and poor metals is their reactivity. The correct answer is option c.
9. To find a sample of fermium with an atomic number of 100, you would look in a science lab. The correct answer is option d.
10. To become positively charged, an atom must lose an electron. The correct answer is option d.