APEX 3.3.4 quiz periodic table

What is the atomic number of the element shown.

• 13

• 26

• 27.0

• 40.0

Tags

NGSS.MS-PS1-1

What is the atomic number of the element shown?

• 46.0

• 31.0

• 30

• 15

Tags

NGSS.MS-PS1-1

The rows in the periodic table are called periods. Which characteristic of the elements increases as you move across a period from left to right?

• Magnetic attraction

• Year discovered

• Atomic number

• Metallic nature

The rows in the periodic table are called periods. What is true about elements in the same period?

• They have similar chemical properties

• Their atomic numbers increase by 1 from left to right.

• Their magnetism increases in strength from left to right.

• They have the same atomic mass.

How are elements in the same period in the period table alike?

• They have the same atomic number

• They have the same atomic mass

• They have similar chemical properties

• They have the same number of electron shells.

How are elements in the same group in the periodic table alike?

• They have similar chemical properties

• They have the same color in nature.

• They have similar atomic masses

• They have the same chemical symbol.

In this periodic table, which type of element is shown in green boxes?

• metals

• metalloids

• nonmetals

• noble gases

Which answer choice describes the noble gases?

• The two separate rows of elements in dark and light blue boxes at the bottom

• All of the elements in green boxes

• All of the elements of Period 1 in orange boxes

• All of the elements of Group 18 in orange boxes.

Which compound most likely has atoms held together by covalent bonds?

• Methane, CH₄

• Lithium fluoride, LiF

• Magnesium chloride, MgCl₂

• Sodium chloride, NaCl

Tags

NGSS.MS-PS1-1

Which compound most likely has atoms held together by ionic bonds?

• Hydrogen peroxide, H₂O₂

• Carbon monoxide, CO

• Ammonia, NH₃

• Magnesium sulfide MgS

Tags

NGSS.MS-PS1-5