Flashcard on Group 7 (Halogens)

Flashcard on Group 7 (Halogens)

Assessment

Flashcard

Chemistry

10th Grade

Easy

Created by

Hanan Alfred

Used 1+ times

FREE Resource

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36 questions

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1.

FLASHCARD QUESTION

Front

What are the elements in Group 7 known as?

Back

Halogens

Answer explanation

The elements in Group 7 of the periodic table are known as Halogens. They are characterized by their reactivity and include elements like fluorine, chlorine, and iodine.

2.

FLASHCARD QUESTION

Front

What is a property of halogens?

Back

They are diatomic

Answer explanation

Halogens, such as fluorine and chlorine, exist as diatomic molecules (e.g., F2, Cl2) in their natural state. They are not all gases, not all metals, and many are indeed poisonous, making 'they are diatomic' the correct property.

3.

FLASHCARD QUESTION

Front

What is the state of bromine at room temperature?

Back

Liquid

Answer explanation

Bromine is unique among the halogens as it is a liquid at room temperature, with a melting point of -7.2°C and a boiling point of 58.8°C. Therefore, the correct state of bromine at room temperature is liquid.

4.

FLASHCARD QUESTION

Front

Which halogen is the most reactive?

Back

Fluorine

Answer explanation

Fluorine is the most reactive halogen due to its high electronegativity and small atomic size, which allows it to attract electrons more effectively than chlorine, bromine, or iodine.

5.

FLASHCARD QUESTION

Front

What happens to the melting and boiling points of halogens as you go down the group?

Back

They increase

Answer explanation

As you go down the group of halogens, the melting and boiling points increase due to the greater atomic size and increased van der Waals forces, which require more energy to overcome.

6.

FLASHCARD QUESTION

Front

What color is chlorine in solution?

Back

Pale yellow-green

Answer explanation

Chlorine in solution appears as a pale yellow-green color. This characteristic hue is due to its molecular structure and the way it absorbs light, distinguishing it from other colors listed in the options.

7.

FLASHCARD QUESTION

Front

What type of bond is formed between two halogen atoms?

Back

Covalent bond

Answer explanation

A covalent bond is formed when two halogen atoms share electrons to achieve a full outer shell. This type of bond is typical for nonmetals, including halogens, making 'covalent bond' the correct answer.

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