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11n1 > C1 - Atomic Structure > Flashcards

C1 - Atomic Structure Flashcards

1
Q

What is the relative charge of a proton?

A

+1

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2
Q

What is the relative charge of a neutron?

A

0

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3
Q

What is the relative charge of a electron?

A

-1

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4
Q

What is the relative mass of a neutron?

A

1

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5
Q

What is the relative mass of a proton?

A

1

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6
Q

What is the relative mass of a electron?

A

negligible (almost zero or 1/2000)

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7
Q

What is an element?

A

A substance made of only one type of atom

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8
Q

What is a compound?

A

A substance made of two or more types of atom/element

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9
Q

What is a mixture?

A

Two or more substances together but not chemically bonded

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10
Q

What does the relative atomic mass of an atom tell us?

A

The number of protons and neutrons added together

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11
Q

What does the atomic number of an atom tell us?

A

The number of protons

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12
Q

Why are atoms neutral in charge?

A

They have they same number of protons and electons

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13
Q

How can you separate a solid from a liquid?

A

Filter using filter paper and a funnel

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14
Q

How can you separate two liquids from each other?

A

Distillation - heat the liquids in a flask until the one with the lower boiling point evaporates and then use a condenser to collect in a different container.

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15
Q

How can you get salt crystals from salt water

A

Crystallisation - heat the salt water in an evaporating dish using a Bunsen burner. When the water starts to boil turn off the Bunsen burner and leave the water to evaporate

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16
Q

What is an isotope?

A

An atom of the same element with a different number of neutrons

17
Q

How many electrons can the each shell hold?

A

1st shell = 2, 2nd, 3rd and 4th shell = 8

18
Q

What was the plum pudding model of the atom?

A

A sphere of positive charge with negative electrons inside (like plums in a plum pudding)

19
Q

What is the nuclear model of the atom?

A

A nucleus containing protons and neutrons and electrons in shells around the nucleus

20
Q

Why was the plum pudding model replaced?

A

Alpha particles (2 protons and 2 neutrons) were scattered by the positive nucleus of the atom.

11n1 (1 decks)

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