Periodic Table and Metals

Which statement is true about oxygen, sulfur, and selenium?

• They belong to the same group

• They belong to the same period

• The mass number doubles between each element

• The atomic number increases by eight between each element

Tags

NGSS.MS-PS1-1

If the atomic number of oxygen is eight, how many protons are in the nucleus of each of its atoms?

• 2

• 4

• 8

• 16

Tags

NGSS.MS-PS1-1

How are elements on the periodic table arranged?

• atomic mass

• atomic number

• chemical symbol

• state of matter

Examine the section of the periodic table in the figure. Which element does not occur naturally on Earth?

• neptunium

• protactinium

• thorium

• uranium

Tags

NGSS.MS-PS1-1

The atomic radius of carbon is 77 pm, and the atomic radius of sulfur is 103 pm. What is the circumference of each atom?

• carbon 154; sulfur 206

• carbon 242; sulfur 323

• carbon 484; sulfur 647

• carbon 967; sulfur 1294

Identify which element is the most metallic.

• potassium

• calcium

• scandium

• titanium

Identify which element is the most malleable.

• potassium

• calcium

• scanium

• titanium

Which is a chemical property of transition elements?

• brightly colored

• denser than alkali metals

• great ductility

• reacts little with oxygen

Angelo wants to develop a new series of pots and pans to use in cooking. Which property of metals should he be the most concerned about?

• conductivity

• ductility

• luster

• malleability

Tags

NGSS.MS-PS3-3

What are 2 properties that make a metal a good choice to use as wire in electronics?

• conductivity and malleability

• ductility and conductivity

• luster and malleability

• malleability and high density