Multiple Choice
Which of the following is a trace element?
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2. Chemistry
Atoms- Smallest Unit of Matter
Back2. Chemistry
Atoms- Smallest Unit of Matter
- Multiple ChoiceIf you were told that concentrations of trace elements above what is required by organisms generally have no effect on those organisms, what would you say?7views
- Multiple ChoiceWhich of the following is considered the smallest unit of matter?1views
- Multiple ChoiceThe number of protons in an uncharged atom __________.9views
- Multiple ChoiceWhat are the four most abundant elements found in living systems?6views
- Multiple ChoiceWhat is the smallest or basic unit of matter?1views
- Multiple ChoiceThere are __________ naturally occurring elements.8views
- Multiple Choice
A neutral atom of chlorine has an atomic number of 17. It has __________ electrons in its third shell.
6views - Multiple ChoiceAn element has eight protons, nine neutrons, and eight electrons. Its atomic number and atomic mass, respectively, are __________.5views
- Multiple Choice
The average oxygen atom has a mass number of 16 and an atomic number of 8. This means that the number of neutrons in this oxygen atom is:
32views - Multiple Choice
How many electrons would be present in the valence shell of a sulfur atom (atomic number 16, mass number 32)?
20views - Multiple Choice
A neon atom (Ne) is unreactive for which of the following reasons?
7views - Multiple ChoiceWhat is generally true about essential elements and living organisms?6views
- Multiple ChoiceWhich of the following has negligible mass?6views
- Multiple ChoiceAn uncharged atom of nitrogen (atomic number = 7) has __________.27views