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The atom
Questions about atoms and bonding
| Question | Answer |
|---|---|
| What is an atom? | A part of an element with the properties of that element. |
| What do you find in the nucleus? | protons and neutrons |
| What charge is on a proton? | positive |
| what charge in on a neutron? | no charge |
| Where do you find electrons? | shells or orbits |
| what charge does an electron have? | negative |
| what does the atomic number tell us? | The number of protons in that element |
| what does the mass number tell us? | The number of protons and neutrons in that element |
| What is an ion? | A charged atom |
| what is an ionic bond? | A bond that is formed by the attraction of opposite charges. |
| Name an ionic compound | NaCl (Sodium Chloride) |
| In an ionic bond, what happens to the electrons in the metal? | The metal loses electrons |
| In an ionic bond, what happens to the non-metal? | The non-metal gains electrons |
| True or false- ionic substances are usually solid | True |
| Ionic substances usually have high melting points | True |
| Covalent bonds usually occur between 2 non-metals true or false? | True |
| water (H2O) is an example of an ionic bond. | False |
| Covalent compounds are usually liquids or gases | True. |