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Description
Flashcards by Dana Curcic, updated more than 1 year ago
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Created by Dana Curcic
over 9 years ago
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| Question | Answer |
| What is an atom? | An atom has a core called a nucleus. it also contains protons and neutrons, as well as having electrons roaming around. |
| What charge do protons, neutrons and electrons? | Protons = Positivley charged Neutrons = Neutral charge Electrons = Negative charge |
| What is the atomic number of an atom? | The number of protons in a atom is the atomic number. There must be the same number of protons and electrons for the atom to be balanced. |
| What is the mass number of an atom? | Mass number = number of protons + number of neutrons |
| Elements | Atomic number- Protons = electrons Chemical symbol Chemical name Atomic weight= Protons + Neutrons |
| What is an element? | An element is made up of atoms that have the same atomic number. it also has protons, neutrons and electrons. |
| What is a compound? | A substance that is formed by two elements that are chemically bound together. |
| What is a molecule | A molecule is a group of automs bonded together. |
| What is a atom | the smallest part of a chemical element that can exist. |
| Element or Compound |
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