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Chemistry
Unit 2 Concept 2 The Periodic Table
| Question | Answer |
|---|---|
| List the three subatomic particles and the charge, location and mass of each | Protons: Positive, nucleus, mass of 1 Neutron: neutral, nucleus, mass of 1 electron: negative, electron cloud, mass of 0 |
| GIve an example of hyphen and nuclear notation for the most common isotope of hydrogen. Explain what the notation tells you about the atom. | Hydrogen-1: explans what the mass number is 1H: also shows mass number |
| Explain what it means for an atom to be electrically neutral, and include the name for an atom that is NOT electrically neutral. | for an element to be electrically neutral there has to be an even number of protons and electrons. a Cation is a positively charged atom, an Anion is negatively charged |
| which number will tell you: a. The identity of an element b. The most common form of an element | a. Atomic number b. Average atomic mass |
| 98.93% of carbon is Carbon-12. 1.07% is Carbon-13. Calculate the average atomic mass for carbon. | 12.0107 |
| Use the periodic tale to determine the identity of each group described below. Then write the symbol in Nucear form. a. An element with 30 protons and 35 neutrons b. An element with 20 protons and 19 electrons | 65Zn Ca+1 |
| atomic number | number of protons |
| mass number | protons + neutrons of that specific atom |
| average atomic mass | weighted average of all the differen isotopes of an element |
| isotopes | atoms of the same element with different numbers of neutrons |
| ions | a positively of negatively chagred atom |
Created by:
Kamryn7
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