Chem Test Flashcards
(25 cards)
What are alkali metals?
Alkali metals are the elements in Group 1 of the periodic table, excluding hydrogen.
List the alkali metals.
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
True or False: Alkali metals are highly reactive.
True.
What is the most common alkali metal found in nature?
Sodium (Na).
Fill in the blank: Alkali metals have _____ valence electron(s).
one.
Which alkali metal is the lightest?
Lithium (Li).
What happens when alkali metals react with water?
They produce hydrogen gas and a hydroxide of the metal.
Multiple choice: Which alkali metal is the most reactive? A) Lithium B) Sodium C) Francium
C) Francium.
What are the physical properties of alkali metals?
They are soft, shiny, have low density, and low melting points.
True or False: Alkali metals can be found in their elemental form in nature.
False.
Fill in the blank: Alkali metals are stored in _____ to prevent reactions with moisture.
oil.
What is the trend of reactivity in alkali metals as you move down the group?
Reactivity increases down the group.
Which alkali metal is used in batteries?
Lithium (Li).
Multiple choice: Which of the following alkali metals is found in the human body? A) Potassium B) Rubidium C) Cesium
A) Potassium.
What is the oxidation state of alkali metals in compounds?
+1.
True or False: The melting and boiling points of alkali metals increase as you go down the group.
False.
Fill in the blank: The alkali metal with the highest melting point is _____
Lithium.
What color flame does sodium produce when burned?
Yellow.
Which alkali metal is highly used in fireworks?
Sodium (Na).
Multiple choice: Which alkali metal is the most expensive? A) Lithium B) Potassium C) Cesium
C) Cesium.
What is the primary use of potassium in agriculture?
As a fertilizer.
True or False: Alkali metals can form covalent bonds easily.
False.
Fill in the blank: Francium is radioactive and has a very _____ half-life.
short.
What is the chemical symbol for rubidium?
Rb.
