Atoms Flashcards

1
Q

What happens in melting and boiling points of pure substances?

A

They become fixed

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2
Q

Relative charge of a proton

A

+1

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3
Q

Relative charge of a nuetron

A

0

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4
Q

Relative charge of an electron

A

-1

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5
Q

Relative mass of a proton

A

1

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6
Q

Relative mass of a neutron

A

1

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7
Q

Relative mass of an electron

A

0.0005

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8
Q

What is meant by the term compound?

A

Two or more different atoms which are chemically bonded together

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9
Q

What should i include when there is a graph with a fixed temperature?

A

That the temperature remains steady and comsistent

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10
Q

How do you calculate the relative formula mass?

For example, H2O

A

2 (1) +16 = 18

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11
Q

What is the triangle to remember how to calculate the moles, mass or relative mass?

A

. Mass
————————– Mole M.R.
Moles X Relative mass

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12
Q

Define the term mole

A

A unit to measure the amount of any substance

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13
Q

What is avogadros number

A

6.02 x 10^23

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