8.P.1.2

How are elements similar to those in the same group on the periodic table?

• They have the same number of electrons.

• They have the same number of Protons.

• They have the same number of valence electrons.

Which choice best describes the properties of potassium (K), based on its position on the periodic table of elements?

• a highly reactive metal

• a nonreactive metal

• a nonreactive nonmetal

Where are the most reactive metals located on the periodic table?

• the uppermost complete row of the table

• the rows at the bottom of the table connecting two section

• the column at the far left side of the table

Which of these is one similarity of the elements in the first group of the periodic table?

• The elements in the group react with oxygen in similar ways.

• The elements in the group have similar atomic masses.

• The elements in the group have the same number of electrons.

Elements in the same column of the periodic table of the elements all

• have the same number of protons.

• share the same atomic structure.

• have similar physical characteristics.

Which statement BEST describes the organization of the periodic table of the elements?

• All gases are grouped together.

• Elements within a group have similar properties.

• Gases easily form compounds with other elements.

Which characteristic of an element determines its placement in the periodic table?

• Number of protons

• Number of Neutrons

• mass

• size

Which statement best explains how periods on the periodic table are organized?

• an increasing number of neutrons from left to right

• the decreasing number of electrons from left to right

• the increasing atomic number from left to right

Element "A"

-conducts electricity

-is a solid

- reacts with water; combines with Cl to form XCl

which is element "A" most likely to be grouped with?

• Calcium

• Chlorine

• Potassium

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

what Element does "P" represent

• Phosphorus

• Calcium

• Platinum

• Plutonium