Trends in Groups

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Question 1 of 1

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Place the Group 1 Alkali Metals in order of Reactivity (Least to Most)

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Match the Text
1
2
3
4
5
6

Click and drag
Caesium
Potassium
Lithium
Rubidium
Francium
Sodium

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Why Are The Alkali Metals Ordered Least-Most Reactive as They Are?

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As you travel down the group 1 metals, the distance between the 1 outer-shell electron from the nucleus increases. This means that the electrostatic attractions between the positively charged nucleus and the negatively charged electron are weaker. Therefore, it is more likely to transfer to another atom and less energy is required to remove the outer electron.

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What Happens to The Melting Point of The Alkali Metals (DOWNWARDS)?

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Explanation

Because of the reactivity increase (so, the less energy needed to cause the reaction.)

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What Happens To The Density of Alkali Metals (DOWNWARDS)?

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Lithium + water =

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129611

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Sodium + water =

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Order of Squeaky Pop Test (For Hydrogen.)

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Match the Text
1
2
3

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A squeaky pop will occur. (if hydrogen is present.)
Hold over the test-tube.
Light a splint.

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What Colour Does A Mixture of an Alkali Metal and Water Turn Universal Indicator?

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Place these Group 7 Halogens in Order of Reactivity (MOST-LEAST)?

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Match the Text
1
2
3
4
5

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Bromine
Iodine
Fluorine
Chlorine
Astatine

Trends in Groups

Question 1 of 1

Time Left

Place the Group 1 Alkali Metals in order of Reactivity (Least to Most)

Match the text (click and drag)

(0/0)

1

2

3

4

5

6

Caesium

Potassium

Lithium

Rubidium

Francium

Sodium

Why Are The Alkali Metals Ordered Least-Most Reactive as They Are?

Fill in the blanks

(0/0)

What Happens to The Melting Point of The Alkali Metals (DOWNWARDS)?

Select the correct answer(s).

(0/0)

Explanation

What Happens To The Density of Alkali Metals (DOWNWARDS)?

Select the correct answer(s).

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Lithium + water =

Select the correct answer(s).

(0/0)

Sodium + water =

Select the correct answer(s).

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Order of Squeaky Pop Test (For Hydrogen.)

Match the text (click and drag)

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1

2

3

A squeaky pop will occur. (if hydrogen is present.)

Hold over the test-tube.

Light a splint.

What Colour Does A Mixture of an Alkali Metal and Water Turn Universal Indicator?

Select the correct answer(s).

(0/0)

Place these Group 7 Halogens in Order of Reactivity (MOST-LEAST)?

Match the text (click and drag)

(0/0)

1

2

3

4

5

Bromine

Iodine

Fluorine

Chlorine

Astatine

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