The periodic table block lists properties of the element chlorine. What does the number 35.453 mean?
|A)||the number of neutrons and in every chlorine atom|
|B)||the number of neutrons and protons in every chlorine atom|
|C)||the average number of neutrons in a chlorine atom|
|D)||the average number of neutrons and protons in a chlorine atom|
According to the periodic table block, how many electrons does an uncharged atom of chlorine have?
Which of the following correctly identifies the three atoms shown in the illustration?
|A)||hydrogen, lithium, sodium|
|B)||hydrogen, helium, lithium|
|C)||hydrogen, helium, helium|
|D)||hydrogen, hydrogen, hydrogen|
What is the mass number for each of the atoms shown in the illustration?
|A)||0, 1, 2|
|B)||1, 1, 1|
|C)||1, 2, 2|
|D)||1, 2, 3|
Which of the following are found close to the right side of the periodic table?
Which of the following is a characteristic that is typical of a solid, nonmetal element?
|C)||good heat conductor|
|D)||good electrical conductor|
Which of the scientists below introduced the idea that matter is made up of tiny, individual bits called atoms?
The illustration shows atoms of an element and molecules of a compound that are combined evenly without making a new compound. What term describes a combination such as this?
If the illustration showed only the element or only the compound, what term would describe it?