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Atomic Physics OALH

Last updated almost 5 years ago
40 questions
Do Now
1

1.Describe the plum pudding model of the atom (1)

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2. Describe what the alpha particle scattering experiment showed about the structure of the atom - choose 3 (3)

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3. Name the part of the atom with a negative charge (1)

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4. Name the variable we change in an experiment (1)

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5. Write this number to 3 significant figures: 99854 m (1)

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Atoms have no overall charge because…

Key Knowledge
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What is an ion?

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When at atom gains an electron, what does it become?

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When at atom loses an electron, what does it become?

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What do we call the orbits of each specific distance from the nucleus?

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What happens when an atom absorbs electromagnetic radiation?

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What happens when an atom emits electromagnetic radiation?

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What is an ion?

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When at atom gains an electron, what does it become?

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When at atom loses an electron, what does it become?

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What do we call the orbits of each specific distance from the nucleus?

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What happens when an atom absorbs electromagnetic radiation?

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What happens when an atom emits electromagnetic radiation?

Recall Quiz
1

1)What do we call an atom that has lost an electron?

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2)What do we call an atom that has gained an electron?

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3) What do we call the orbits of each specific distance from the nucleus?

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4) What causes an electron to move to a higher energy level?

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5) What causes an electron to move to a lower energy level?

We Do
1

•The _______________ (1)chorine atom atom will _________(2) one electron to become a chloride ion.
•Since electrons are ____________(3) charged, when an electron is ___________(4) the ion will become negatively charged. (Write the four missing words in order)

You Do
1

1. Explain what has happen to the electron(s) when a bromine atom (Br) turns to a bromide ion (Br-) (1)

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2. Explain what has happen to the electron(s) when a magnesium atom (Mg) turns to a magnesium ion (Mg2+) (1)

Independent Task
1

K+

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Ca2+

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O2-

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Al3+

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F-

1

Zn2+

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S2-

We Do - Absorption
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•When blue light is incident on an atom, an electron can ____________(1) the electromagnetic radiation
•This results in the electron ___________(2) energy and so it moves to a _____________(3) energy level
•A ____________(4) energy level is ___________(5) from the nucleus (Write down the 5 missing words)

We Do - Emission
1

•When x-rays are ____________ (1) from an atom, an electron has ___________ (2) energy
•This results in the electron moving to a __________ (3)energy level
•A __________(4) energy level is __________ (5)to the nucleus. (Write in the missing 5 words)

You Do
1

Explain the difference in the arrangement of atoms when electromagnetic is incident on an atom and when electromagnetic radiation is emitted from an atom

Plenary
1

1.What is formed when an atom loses an electron?

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2.What is formed when an atom gains an electron?

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3.Has this atom lost or gained electrons - Zn2+ ?

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4.What happens to the arrangement of electrons when radiation is emitted from an atom?