physical properties Flashcards
(27 cards)
What are the two main groups of block elements in the periodic table?
Group 1 (alkali metals) and Group 2 (alkaline earth metals).
True or False: Alkali metals are highly reactive and are not found in nature in their elemental form.
True.
Fill in the blank: The density of alkali metals ______ as you move down the group.
increases.
What is the trend in ionization energy for alkali metals down the group?
Ionization energy decreases down the group.
Which alkali metal is the least dense?
Lithium.
Multiple Choice: Which of the following has the highest melting point among alkali metals? A) Sodium B) Potassium C) Lithium D) Rubidium
C) Lithium.
What is the general appearance of alkaline earth metals?
They are shiny and silvery-white.
True or False: Alkaline earth metals have higher ionization energies than alkali metals.
True.
Fill in the blank: Magnesium and calcium react with water to form ______.
hydroxides.
What is the trend in atomic radius for alkaline earth metals as you move down the group?
Atomic radius increases down the group.
Multiple Choice: Which alkaline earth metal is most reactive? A) Beryllium B) Magnesium C) Calcium D) Barium
D) Barium.
What is the common oxidation state of alkali metals?
+1.
What is the common oxidation state of alkaline earth metals?
+2.
True or False: Alkali metals form covalent bonds with nonmetals.
False.
Fill in the blank: The melting point of alkaline earth metals ______ as you move down the group.
decreases.
What is the main characteristic of the reactivity of alkali metals with water?
They produce hydrogen gas and an alkaline hydroxide.
Multiple Choice: Which of the following is a property of alkali metals? A) Low density B) High density C) Brittle D) Poor conductors
A) Low density.
What happens to the reactivity of alkaline earth metals as you go down the group?
Reactivity increases.
True or False: All alkaline earth metals react with water.
False.
Fill in the blank: The first ionization energy of alkali metals ______ as you move down the group.
decreases.
What is the trend in electronegativity for alkali metals down the group?
Electronegativity decreases.
Multiple Choice: Which alkali metal reacts vigorously with water? A) Lithium B) Sodium C) Potassium D) Rubidium
C) Potassium.
What is the effect of increasing atomic number on the physical properties of alkali metals?
Physical properties such as density and atomic radius increase.
True or False: Alkaline earth metals are harder than alkali metals.
True.
