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1. Matter is composed of exceedingly small particles called atoms. An atom is the smallest unit of an element that can participate in a chemical change. 2. An element consists of only one type of atom, which has a mass that is characteristic of the element and is the same for all atoms of that element. 3.
Oct 12, 2020 · Identify the elements by name and symbol. Define: proton, neutron, electron, mass number, atomic number, isotope, ion, cation, and anion. Extract relevant information from the periodic table. The development of modern atomic theory revealed much about the inner structure of atoms.
Nov 21, 2017 · So its state symbol will be $\text{(aq)}$. Hydrogen on the other hand is a gas (at room temperature and above) and highly insoluble in water: it will leave the reaction as gas and its state symbol will be $\text{(g)}$. So without knowing the physical/chemical properties of the reagents/reaction products, the state symbols cannot be determined.
State Symbols in Chemistry Explained. 3.5 out of 5 stars (based on 2 reviews) What are state symbols in a chemical equation? State symbols are used to show the physical state of reactants and products in a reaction, at the reaction temperature. This means the temperature at which the reaction takes place.
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atomic number (Z): number of protons in the nucleus of an atom. cation: positively charged atom or molecule (contains fewer electrons than protons) chemical symbol: one-, two-, or three-letter abbreviation used to represent an element or its atoms. Dalton (Da): alternative unit equivalent to the atomic mass unit.
- Carol Higginbotham
- 2020
Solution. The atomic number of iodine (53) tells us that a neutral iodine atom contains 53 protons in its nucleus and 53 electrons outside its nucleus. Because the sum of the numbers of protons and neutrons equals the mass number, 127, the number of neutrons is 74 (127 − 53 = 74). Since the iodine is added as a 1− anion, the number of ...
State Symbols. Term. 1 / 10. What is the state symbol for a solid? Click the card to flip 👆. Definition. 1 / 10. (s) Click the card to flip 👆.
