Flashcards
C1
Flashcards do conjunto (11)
- 1Atoms and MoleculesAtoms are the smallest particle of a chemical element that can exist. A Molecule are a group of atoms bonded together.
- 2What is the difference between Physical and Chemical Change?When chemical bonds form between atoms a new substance is formed. It is difficult to reverse chemical change/ chemical reaction.
- 3What is an element?An element is one type of atom
- 4What is a compound?A compound is made of two or more seperate elements.
- 5What is a mixture?A mixture is made by mixing other substances together
- 6Structure of an AtomAll the atoms of a particular element have the same atomic number but they can have different mass numbers because the number of neutrons may vary. Atoms of the same element that have different numbers of neutrons are called isotopes.
- 7IsotopeIsotopes have the same number of protons but different number of neutrons.
- 8Proton NumberNumber of protons in a nucleus
- 9Nucleon NumberNumber of nucleons is the number of protons + the number of neutrons in the nucleus
- 10How can you tell if atoms are from the same element?They have the same atomic number (proton number)
- 11Relative Atomic MassEquivalent to the number of protons and neutrons in an atom
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- Includes all information I need to know for Internal Exams
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- Ethan
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