Metals Flashcards

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1
Q

Give 5 features of metals

A
They are strong
They are malleable 
They are shiny
They are not bendy
They have high melting points
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2
Q

What is an alloy

A

It is a substance which has been formed by combining two or more metallic elements

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3
Q

What do people make alloys

A

Because they are stronger and last longer

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4
Q

How can you predict how reactive a metal is

A

By reacting them with water, an acid or oxygen

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5
Q

What are the products from an acid + metal

A

A salt + hydrogen

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6
Q

Acid + metal carbonate -

A

A salt +carbon dioxide + water

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7
Q

Acid +metal oxide -

A

A salt + water

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8
Q

What are the diatomic molecules

A
Hydrogen
Nitrogen
Fluorine
Oxygen 
Iodine
Chlorine
Bromine
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9
Q

What does an acid always have in its formula

A

Hydrogen

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10
Q

What does diatomic mean

A

It means the atoms travel around in pairs

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11
Q

How do we know if a chemical reaction has taken place?

A
There could be:
Colour change
Temperature change
New product formed 
Change in mass
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