Atomic Structure and Periodic Trends

The majority of elements on the periodic table are

• man made.

• nonmetals.

• metals.

• gases.

Which of these is a property of metals?

• It's malleable

• It can't conduct electricity

• They are used in food

• It's very brittle

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is silicon?

• metal

• nonmetal

• metalloid

Iron is a good conductor, malleable and magnetic. What type of element is iron?

• metal

• nonmetal

• metalloid

Elements in the same ________ are more chemically similar.

• group

• period

• club

• table

All elements in the same group have the same number of ___.

• protons
• neutrons
• atomic mass units
• valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Where are the inner transition metals located?

• at the left of the periodic table

• at the right of the periodic table

• in the middle of the periodic table

• at the bottom of the periodic table

The noble gases include which of the following sets of elements?

• Ar and Kr

• H and He

• F and Cl

• O and S

Chlorine (Cl) is part of what group?

• alkali metals

• alkaline earth metals

• halogens

• noble gases