5.2 Trends in the Periodic Table Flashcards

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1
Q

Define chemical property

A

a property that is seen when a substance takes part in a chemical change

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2
Q

Define physical property

A

the property that can be observed or measured without changing the basic nature of the substance.

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3
Q

Give 2 examples of chemical properties

A

Reactivity
Flammability

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4
Q

Define reactivity

A

How likely a substance will undergo a chemical reaction

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5
Q

Give an example of a element that is flammable

A

Hydrogen

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6
Q

Give examples of elements that are not flammable

A

Gold
Nitrogen

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7
Q

What does chemical properties of an element depend upon?

A

It depends on the number of electrons in their outer shell. Elements with the same number will have similar chemical properties.

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8
Q

Give a few examples of physical properties

A

Melting point
Boiling point
Hardness
Colour

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9
Q

What are the elements in Group 1 called?

A

alkali metals

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10
Q

What are alkali metals

A

These elements are reactive metals. They all react with water to produce hydrogen and an alkaline solution.

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11
Q

What is the word equation for the reaction of sodium with water

A

sodium + water –> sodium hydroxide + hydrogen

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