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Chemical equations
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- Chemical reactions are represented on paper by chemical equations. For example, hydrogen gas (H 2) can react (burn) with oxygen gas (O 2) to form water (H 2 O). The chemical equation for this reaction is written as: 2H 2 + O 2 → 2H 2O
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How are chemical reactions represented on paper?
How do you represent a chemical reaction in a symbol equation?
How is a chemical reaction described?
Where do reactants appear in a chemical equation?
How can we represent reactions by word and symbol equations?
What happens when a chemist encounters a new reaction?
A chemical reaction involves the breaking and forming of chemical bonds between different substances to create new ones. Reactants are the starting substances, and products are the substances that are formed.
Chemical reactions can be represented in several ways including word equations, symbol equations, and energy level diagrams. Symbols and formulas are used to write chemical equations that represent chemical reactions. Word Equations.
When we can represent reactions by word and symbol equations: methane + oxygen → carbon dioxide + water or CH4 + O2 →; CO2 + H2O. To this we can add state symbols to give more information about the substances: (s) – solid. (l) – liquid. (g) – gas. (aq) – aqueous. Example: CH4 (g) + O2 (g) → CO2 (g) + H2O(g)
Symbol equations are a quick way of representing chemical reactions. They show us what atoms are involved and how they are bonded together. Symbol equations always take the form, reactants →...
Key points. Chemical reactions make new chemicals. Atoms are rearranged during a chemical reaction, but the number of atoms does not change. Evidence of chemical reactions includes a large...
Aug 26, 2023 · A chemical reaction is a process in which the chemical structure of a substance changes, leading to the formation of a new substance with different properties. In other words, the reactants convert into products through the breaking and formation of chemical bonds.
