Metals are found on the LEFT or RIGHT side of the periodic chart of elements?
Left
Which groups on the periodic table contain metalloids?
Groups 13-16
Non-metals are found on the LEFT or RIGHT side of the periodic chart of elements?
Right
The first energy level can hold up to how many electrons?
2
Groups are the two names for which of the following:
horizontal rows or vertical columns?
vertical columns
Metals tend to be shiny. What is another word for "shiny"?
Luster
Which property do metalloids share with nonmetals?
Both are brittle.
Which family contains the non reactive gases?
Noble gases
Which subatomic particle has a negative charge?
Electron
How many periods does the periodic table have?
7
Which family of METALS is the most chemically reactive?
Alkali Metals ( group 1 )
Which element in period 3 on the periodic table is a metalloid?
silicon (Si)
How is Selenium classified?
Non-metal
What is a valence electron?
A. electrons in the second energy level
B. electrons in the outermost energy level
C. the atomic number
D. electrons in the first level
B. electrons in the outermost energy level
Elements in Group 2 are known as
-alkali metals
-halogens
-metalliods
-alkali earth metals
-noble gases
-alkali earth metals
The elements found in group 3-12 that form or make compounds with distinctive colors. are called the ______________ ___________.
transition metals
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon?
A. Metal
B. Nonmetal
C. Metalloid
D. Pretty
Metalliods
True or False:
Non-metals are usually good conductors.
False
Which two elements have properties in common?
A. Nitrogen and Phosphorous
B. Oxygen and Nitrogen
C. Sulfur and Nitrogen
A. Nitrogen and Phosphorous
What does an atom's period tell us?
A. of protons
B. Number of electrons
C. Number of valence electrons
D. Number of shells
D. Number of shells
Would a metal in Group 13 be more or less reactive than a metal in Group 1? Explain.
A metal in group 13 is less reactive than an metal in group 1 because the farther right on the periodic table, the less reactive.
How does the number of valence electrons in atoms of metalloids explain why metalloids are semiconductors?
They have three to six valence electrons, so they can lose or gain electrons.
Which element is a metalliod?
Polonium
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.
A.26
B.30
C.53
D.56
D.56
How many elements belong to the Alkali metals family? List the member elements by their symbol.
6 elements = Li, Na, K, Rb, Cs, Fr