1.Describe the plum pudding model of the atom (1)
2. Describe what the alpha particle scattering experiment showed about the structure of the atom - choose 3 (3)
3. Name the part of the atom with a negative charge (1)
4. Name the variable we change in an experiment (1)
5. Write this number to 3 significant figures: 99854 m (1)
Atoms have no overall charge because…
What is an ion?
When at atom gains an electron, what does it become?
When at atom loses an electron, what does it become?
What do we call the orbits of each specific distance from the nucleus?
What happens when an atom absorbs electromagnetic radiation?
What happens when an atom emits electromagnetic radiation?
What is an ion?
When at atom gains an electron, what does it become?
When at atom loses an electron, what does it become?
What do we call the orbits of each specific distance from the nucleus?
What happens when an atom absorbs electromagnetic radiation?
What happens when an atom emits electromagnetic radiation?
1)What do we call an atom that has lost an electron?
2)What do we call an atom that has gained an electron?
3) What do we call the orbits of each specific distance from the nucleus?
4) What causes an electron to move to a higher energy level?
5) What causes an electron to move to a lower energy level?
•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)
1. Explain what has happen to the electron(s) when a bromine atom (Br) turns to a bromide ion (Br-) (1)
2. Explain what has happen to the electron(s) when a magnesium atom (Mg) turns to a magnesium ion (Mg2+) (1)
K+
Ca2+
O2-
Al3+
F-
Zn2+
S2-
•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)
•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)
Explain the difference in the arrangement of atoms when electromagnetic is incident on an atom and when electromagnetic radiation is emitted from an atom
1.What is formed when an atom loses an electron?
2.What is formed when an atom gains an electron?
3.Has this atom lost or gained electrons - Zn2+ ?
4.What happens to the arrangement of electrons when radiation is emitted from an atom?