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DC Chemistry > Periodic Table and ionic bonding > Flashcards

Periodic Table and ionic bonding Flashcards

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1
Q

The columns of the periodic table are called ……

A

Groups

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2
Q

What does group number tell you?

A

Number of electrons in the outer shell

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3
Q

The rows of the periodic table are called……

A

Period

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4
Q

What does the period tell you?

A

Number of shells

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5
Q

The outer shell of the most stable atoms is ……

A

Full of electrons

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6
Q

group 1 elements are very reactive as they try to lose an ……..

A

electron

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7
Q

An atom in group 7 has 7 electrons in its outer shell.

What will it try and do to become stable?

A

Gain an electron

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8
Q

What is the definition of an ionic bond?

A

The electrostatic force of attraction between oppositely charged ions.

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9
Q

An atom which loses an electron becomes positively charged.

What are positively charged ions called?

A

Cations

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10
Q

ionic compounds have what type of structure?

A

Giant ionic lattice

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11
Q

List the properties of ionic compounds?

A

High melting and boiling points

Conduct electricity in liquid and gas form

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12
Q

What comes first in the formula for an ionic compound, the positive or negative ion?

A

The positive ion (the metal ion)

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13
Q

Elements are divided into metals and non metals.

What are the properties of metals?

A 
Conduct heat
Conduct electricity
Malleable 
Ductile
High melting point
Dense
Shiny
Ductile
Sonorous
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14
Q

What are the properties of non metals?

A 
Low melting point
Brittle
Dull
Poor conductors of heat
Poor conductors of electricity
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15
Q

Where do non metals appear on the periodic table, the left or right side?

A

On the right side (remember the ladder)

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16
Q

What % of oxygen is in the air?

A

21%

17
Q

What % of nitrogen is in the air?

A

78%

18
Q

What laboratory reaction is used to make oxygen?

A

Hydrogen peroxide —> water + oxygen

managanse (IV) oxide as catalyst

19
Q

What’s the test for oxygen?

A

Relights a glowing splint

20
Q

Describe what magnesium looks like when it burns in oxygen?

A

Burns vigorously with a bright white light

21
Q

When non metallic elements burn they form oxides which are acid or alkaline?

A

Acidic

22
Q

When metallic elements burn, they form oxides which are acidic or alkaline?

A

Alkaline

23
Q

Acid rain is caused by sulfur in fossil fuels being released to form which gas?

A

Sulfur dioxide

24
Q

Sulphur dioxide mixes with moisture and oxygen in the air to form which acid?

A

Sulfuric acid (acid rain)

25
Q

When engines burn fossil fuels, the high temp in the spark can cause the nitrogen in the air to form which gas?

A

Nitrogen oxide (adds to acid rain)

26
Q

List the effects on the environment of acid rain

A

Acidic lakes and streams killing fish and plants

Poisons trees

27
Q

What is a compound?

A

Different types of atoms chemically joined

28
Q

What is a physical change?

A

Remains same substance but in a different state

E.g. Melting and boiling

Easy to reverse

29
Q

What is a chemical change?

A

Substance changes to a different one

E.g. Burning
Rusting

Difficult to reverse

30
Q

How do we make carbon dioxide in a lab ?

A

Calcium carbonate + hydrochloric acid –> calcium chloride + water + CO2

31
Q

What is the method for collecting CO2?

A

Upwards displacement

Also called downward delivery

32
Q

What is the test for CO 2?

A

Turns limewater cloudy

33
Q

What type of reaction uses heat to break down a compound?

A

Thermal decomposition

34
Q

List facts about CO2?

A 
Part of carbon cycle
Used in photosynthesis 
Given out when burning fossil fuels
A greenhouse gas
Contributes to climate change 
Dense
35
Q

What is oxidation?

A

Gain of oxygen
Loss of electrons

OiL

36
Q

What is reduction?

A

Loss of oxygen
Gain of electrons

RiG

37
Q

What is a redox reaction?

A

Both gain and loss of oxygen or electrons

DC Chemistry (21 decks)

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