Chemisrty: Pre-Section Quiz Hand-out
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- What is a negatively charged paricle called?
- Anion
- Do elements that have the same # of valence electrons have similar chemical properties?
- Yes
- Does the Atom have a sharply defined outer boundary?
- No
- What are elements in the periodic table arranged according to?
- their atomic number
- In the periodic table, elements that have similar properties are grouped in vertical columns or horizontal rows?
- vertical columns
- of the elements helium, iron, sulfur, calcium, potassium, which one would react in a way most like sodium?
- potassium
- which 2 have nearly identical masses? protons/neutrons/electrons
- neutrons and protons
- true or false. Neutral atoms have the equal numbers of protons and electrons.
- true
- is there a limit to the number of electrons that can occupy each energy level surrounding an atom?
- yes
- which element is least reactive out of aluminum, magnesium, helium, hydrogen,oxygen?
- helium
- hydrogen-1, hydrogen-2, hydrogen-3 are isopopes that have the same # of protons/neutrons/electrons?
- neutrons