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Year 10 Chemistry - Atomic Structure and the Periodic Table Flashcards | StudBud

Explore/Year 10 Chemistry - Atomic Structure and the Periodic Table

Magnesium

An Atom is excited if…

Year 10 Chemistry - Atomic Structure and the Periodic Table

10 terms·StudBud Administration·219 plays

Revision quiz Year 10 Chemistry

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Questions 10

Answers

1
An Atom is excited if…
it has lost an electron
it has a full outer shell
it has all its electrons in the ground state (lowest energy level)
one electron is in a higher energy level than it should be
2
Magnesium
Gains 2 electrons and forms a 2- charge
Loses 2 electrons and forms a 2- charge
Gains 2 electrons and forms a 2+ charge
Loses 2 electrons and forms a 2+ charge
3
What is the atomic number?
Number of protons
Number of electrons
Number of neutrons
Number of protons and neutrons
4
An atom with 3 shells and 2 valence electrons is on the Periodic Table in…
Cannot be determined
Group 3 and period 2
Group 2 and period 3
Group 6 and period 3
5
What is an Ion?
A stable atom with a full outer shell
A charged particle
An atom with an excited electron
Elements with different number of protons
6
What is an Isotope?
Elements with different number of neutrons
Elements with different number of protons
A charged particle
Elements that have gained or lost an electron
7
The thing that determines an elements reactivity is its…
number of shells
mass number
atomic number
number of valence electrons
8
What is the Mass Number?
Number of electrons
Number of neutrons
Number of protons and neutrons
Number of protons
9
Calcium has an atomic number of 20 and a mass number of 40. Its electron configuration is
2, 8, 8, 8, 8, 6
2, 8, 18, 12
2, 8, 8, 2
2, 8, 10
10
Which is true?
Metals gain electrons and non-metals lose electrons
Metals and Non-metals lose electrons
Metals and Non-metals gain electrons
Metals lose electrons and non-metals gain electrons