Chemical Properties Of S-Block Elements MDCAT Quiz: This plays a very vital role in the reactivity and behavior of elements in the periodic table. The s-block elements, which include the alkali metals (Group 1) and alkaline earth metals (Group 2), show very unique chemical properties due to their electronic configuration, most especially the tendency to lose electrons. This topic is very important for the MDCAT Quiz and related questions on chemical reactivity, bonding, and trends.
Chemical Properties of Alkali Metals (Group 1)
Alkali metals, including lithium (Li), sodium (Na), and potassium (K), are known for their high reactivity, especially with water and oxygen. These metals have one electron in their outermost shell, which they readily lose to form cations with a +1 charge. The following are key chemical properties of alkali metals:
Quiz on Chemical Properties of Alkali Metals
The MDCAT Quiz on alkali metals will test students’ understanding of their chemical reactivity, especially their reactions with water, oxygen, and halogens. Students may be asked to identify the products of these reactions and explain the trends in reactivity as you move down the group. For example, understanding why potassium is more reactive than sodium will be a key point in the quiz.
Chemical Properties of Alkaline Earth Metals (Group 2)
The alkaline earth metals, such as Mg, Ca, and Ba, each have two electrons in the outermost shell and share a certain chemical behavior, with some difference between them. These metals are not as reactive as the alkali metals but still do react with water and oxygen at one point or another.
Free Flashcard for Chemical Properties of S-Block Elements
To help MDCAT students better understand the chemical properties of s-block elements, the Free Flashcard can be used to summarize the key reactions and trends. The flashcards focus on the reactivity of alkali and alkaline earth metals, their reactions with water and oxygen, and the formation of ionic compounds. By regularly reviewing these flashcards, students can strengthen their understanding of the s-block elements’ chemical properties and prepare for related questions in the MDCAT exam.
What is the reaction of alkali metals with water?
They form hydroxides and release hydrogen gas.
What is the trend in the reactivity of alkali metals as you go down the group?
Reactivity increases.
How does lithium react with oxygen?
Forms lithium oxide (Li₂O).
What happens when sodium reacts with chlorine?
Sodium chloride (NaCl) is formed.
Which compound is formed when potassium reacts with water?
Potassium hydroxide (KOH) and hydrogen gas.
How does the solubility of alkali metal hydroxides change down the group?
They become more soluble.
What is the nature of the oxides of alkali metals?
They are basic.
How do alkaline earth metals react with water?
They form hydroxides and release hydrogen gas.
What is the product formed when magnesium reacts with oxygen?
Magnesium oxide (MgO).
What is the reaction of calcium with water?
It forms calcium hydroxide (Ca(OH)₂) and hydrogen gas.
How does the reactivity of alkaline earth metals change as you move down the group?
Reactivity increases.
What is formed when alkali metals react with oxygen?
Alkali metal oxides.
What is the nature of sodium oxide (Na₂O)?
Basic.
How does lithium react with nitrogen?
It forms lithium nitride (Li₃N).
What is formed when calcium reacts with chlorine?
Calcium chloride (CaCl₂).
What is the common oxidation state of alkali metals in their compounds?
1
What is the product when sodium reacts with sulfur?
Sodium sulfide (Na₂S).
How does the basicity of hydroxides change down the group in alkali metals?
They become more basic.
How do alkali metals react with hydrogen?
They form hydrides.
What is the characteristic color of sodium flame?
Yellow.
What happens when magnesium reacts with steam?
It forms magnesium hydroxide (Mg(OH)₂).
What is formed when lithium reacts with chlorine?
Lithium chloride (LiCl).
What happens when potassium is heated in the air?
It forms potassium oxide (K₂O).
What is the nature of the oxides of alkaline earth metals?
They are basic.
How do alkali metals react with halogens?
They form halides.
What happens when magnesium reacts with hydrochloric acid?
It forms magnesium chloride (MgCl₂) and hydrogen gas.
How do alkali metals react with alcohols?
They form alkoxides.
What happens when calcium reacts with sulfuric acid?
It forms calcium sulfate (CaSO₄) and hydrogen gas.
How do alkaline earth metals react with hydrogen?
They form hydrides.
What is the result of heating potassium nitrate (KNO₃)?
It decomposes to form potassium nitrite (KNO₂) and oxygen gas.
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