Unit 7 Review Questions - Atoms and Periodic Table

Front

What are Transition Metals?

Back

Transition metals are elements found in groups 3-12 of the periodic table. They are known for forming colored compounds and having variable oxidation states.

Front

Why must HF (Hydrofluoric Acid) be stored in plastic or rubber bottles?

Back

HF is highly corrosive and can react with glass, which is why it must be stored in plastic or rubber containers.

Front

True or False: Many nonmetals are gases at room temperature.

Back

True. Many nonmetals, such as oxygen and nitrogen, exist as gases at room temperature.

Front

Which noble gas is used in diving tanks to prevent nitrogen narcosis?

Back

Helium is used in diving tanks to prevent nitrogen narcosis due to its low solubility in blood.

Front

Which element has similar chemical properties to Fluorine (F)?

Back

Bromine (Br) has similar chemical properties to Fluorine because they are both halogens.

Front

What are Alkali Metals?

Back

Alkali metals are the elements in group 1 of the periodic table, known for being highly reactive and having one electron in their outer shell.

Front

What is the significance of the Periodic Table of Elements?

Back

The Periodic Table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What are Noble Gases?

Back

Noble gases are elements in group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell.

Front

What is a Halogen?

Back

Halogens are elements in group 17 of the periodic table, known for being highly reactive and forming salts when combined with metals.

Front

What is the general trend of reactivity in Alkali Metals?

Back

Reactivity increases down the group in Alkali Metals, with elements like cesium being more reactive than lithium.