Flashcards
C2a Topic 1 - Atomic Structure and the Periodic Table
Cards in this deck (26)
- 1What makes up an atom?The nucleus, electrons,
- 2What is does the nucleus consist of?Protons and neutrons.
- 3What are the charges for protons and electrons and neutrons?Protons - positive
Neutrons - neutral
Electrons - negative - 4What do electrons do?They move around the nucleus in circles.
- 5What is the weight of electrons?Virtually no mass
- 6Is the number of neutrons the same as protons?usually yes, but not always the same
- 7The number of ........... equals the number of ........?The number of Protons Equals Number of Electrons
- 8Describe: Protons, Neutrons,and ElectronsProtons are heavy and positively charged.
Neutrons are heavy and neutral.
Electrons are tiny and negatively charged - 9What are the Electron shell rules? 1), 2),3),4), 5).1) Electrons always occupy shells (sometimes referred to as energy levels).
2) The LOWEST energy levels are always filled first -- these are the ones closest to the nucleus.
3) Only a certain number of electrons are allowed in each shell: 1st shell: 2, 2nd shell:8, 3rd shell: 8.
4) Atoms are much HAPPIER when they have FULL electron shells.
5) In most atoms the OUTER shell is NOT full and this makes the atom want to react. - 10What do you use the Electron shell rules to work out?Electronic Configurations
- 11Elements consist of One type of.... what?ATOM! duuh
- 12Does each element has the same or different number of protons?DIFFERENT
- 13Each element has a what numbers? A + MAtomic and Mass number
- 14What is the atomic number ?How many protons there are in an atom.
(THE SMALL NUMBER AT THE BOTTOM) - 15What else does the atomic number show?The number of electrons there are.
- 16What is the mass number?The total number of protons and nuetrons...
(THE BIG NUMBER AT THE TOP) - 17How do you find the number of neutrons in an atom?Subtract the ATOMIC number from the MASS number.
- 18NOTE : the mass number is roughly double the atomic number, because there's the same number of neutrons as protons in any nucleus.YAAAY!
- 19What is an isotope?The same element with the exception of an extra NEUTRON or two.
- 20What is relative Atomic Mass?It is the average mass of the isotopes of an element.
- 21Who was it who began to notice periodic patterns in the properties of the elements?Dmitri Mendeleev
- 22How many known elements are there in the periodic table100
- 23How is the periodic table arranged?In Periods and Groups
- 24What are Periods?Rows in the table... The elements are arranged in order of increasing atomic number along each row. (the periodic number is the same as the number of electron shells.)
- 25What are groups?The columns of the table. (the same number of electrons in their outer shell).
- 26What is the protons and neutrons made up of?Quarks?!? - Not quacks
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- A Level Science Flashcards on C2a Topic 1 - Atomic Structure and the Periodic Table, created by Chloeby on 04/09/2013.
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