Understanding the Periodic Table

Which of the following statements is true about the organization of the periodic table? A) Groups go across the table - the rows. B) Periods go up and down the table - the columns. C) Groups go up and down the table - the columns. D) Periods go diagonally across the table.

• A) Groups go across the table - the rows.

• B) Periods go up and down the table - the columns.

• C) Groups go up and down the table - the columns.

• D) Periods go diagonally across the table.

Group 1 elements are known as Alkali Metals. They are very reactive because they have how many valence electrons?

• 0

• 1

• 2

• 8

Fill in the blank: Noble Gases do not react with other elements because they have ______ valence electrons.

• 1

• 2

• 4

• 8

Which type of element is described as having luster, being ductile, malleable, and good conductors of electricity and heat?

• Metals

• Non-Metals

• Metalloids

• Noble Gases

The atomic number of an element is equal to the number of which subatomic particle?

• Neutrons

• Electrons

• Protons

• Valence Electrons

Which atomic theory described the atom as a solid sphere that made up all things, similar to a marble or pool ball model?

• Thomson

• Rutherford

• Dalton

• Bohr

In the Bohr model of an atom, the 1st ring can only have ___ electrons.

• 2

• 8

• 18

• 4

In the chemical formula Ba3(PO4)2, how many different elements are present?

• A) 2

• B) 3

• C) 4

• D) 5

Tags

NGSS.MS-PS1-1

Fill in the blank: In the chemical formula Ba3(PO4)2, the elements present are Ba, P, and ____.

• A) N

• B) O

• C) H

• D) S

Tags

NGSS.MS-PS1-1

What does a chemical formula represent?

• A molecule

• A cell

• A compound

• An atom.

Tags

NGSS.MS-PS1-1