Exam Prep Flashcards

1
Q

What does the group number represent?

A

It tells us how many electrons are in the outer valence shell

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2
Q

What does the period number represent

A

It tells us how many electrons shells they are

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3
Q

What is the definition of an acid?

A

A substance that releases H+ ions in water

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4
Q

What is the definition of a base?

A

A substance that releases OH negative ions in water

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5
Q

What is the definition of an Alkali?

A

A base that is soluble (able to desolve) and water

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6
Q

What is the process of neutralisation?

A

The process were Edge plus in o h negative ions

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7
Q

What is the charge of neutrons?

A

They are neutral no charge

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8
Q

What is the charge of electrons?

A

They are negatively charged

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9
Q

What’s the charge of protons?

A

They are positively charged

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10
Q

What does the atomic number represent?

A

The number of protons

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11
Q

What does the mass number represent

A

The number of protons and neutrons

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12
Q

Sodium hydroxide carbonate + sulfuric acid

A

Sodium hydroxide carbonate + sulfuric acid = sodium sulfate +water + carbon dioxide

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13
Q

How is sodium negatively charged?

A

Sodium is 1 - because it loses the electron to form a full valence shell

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14
Q

What is the combination Reaction?

A

A combination reaction is a reaction which two or more substances combine to form a single new substance.

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15
Q

What is a decomposition reaction?

A

A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products

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16
Q

What is the displacement reaction?

A

the atom or set of atoms is to place by another atom and a molecule. For instance, when iron is added to copper sulfate solution it displays the copper metal