Flashcards
chemistry atoms
Cards in this deck (8)
- 1A nanometer(nm) compared to a meter is? What is the radius of an atom? Give the relative mass and charge of all subatomic particles.a) 1x10^-9m
b) 0.1nanometres
c) proton 1 & +1
neutron 1 & 0
electron 0 & -1 - 2why are atoms neutral? mass number? atomic number?a) they have no overall charge
b) number of protons & neutrons]
c) number of protons & electrons - 3Isotopes of an element have..... Ions of an element have.... Atoms of an element have... Definition of an element.a) the same number of protons & a different number of neutrons
b) lost or gained one or more electros
c) the same number of protons
d) A substance that can't be broken down into another substance. Every element is made up of it's own type of atom. - 4What is relative atomic mass? what is the formula for relative atomic mass?a) An average mass (taking into account the different masses & abundances (amounts) of all isotopes that make up an element.)
b) relative atomic mass(Ar)= sum of (isotopes abundance x isotope mass number) / sum of abundances of all isotopes - 5What is a compound?A compound is a substance that contains two or more different elements. The atoms are in fixed proportions and these atoms are chemically joined.
- 6Describe a compound formed from metals and non-metals and what the process is called.the compound consists of ions. The metal atom loses electrons to form positive ions and non-metal atoms gain electrons to form negative ions. This is called ionic bonding.
- 7Describe a compound formed of non-metals and give the name of the process.A compound formed from non-metals consists of molecules. Each atom shares an electron with another atom. This is called covalent bonding.
- 8Give the symbols for the following elements: carbon dioxide, Ammonia, Water, Sodium chloride, Carbon monoxide, Hydrochloric acid, Calcium chloride, Sodium carbonate, Sulfuric acid.a) CO2
b) NH3
c) H2O
d) NaCl
e) CO
f) HCl
e) CaCl2
g) Na2
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- GCSE Chemistry Flashcards on chemistry atoms, created by Love Shine18 on 28/07/2021.
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- Love Shine18
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