Explanation: Some of the most important properties of synthetic materials are as follows: 1. Tensile strength 2. The Action of water 3. The Action of heat and flame 4. Thermal conductivity 5. Electrical conductivity. The usefulness or otherwise of a synthetic material depends upon the following properties. 1. Tensile strength:
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Before Rutherford, JJ Thompson came up with the "plum pudding" model, in which the atom is composed of electrons surrounded by positive charge to balance the electrons’ negative charges. Rutherford's experiment disproved this model, by showing there's a small, high-energy nucleus in the center of an atom.
Answer:
A compound is a substance which contains two or more elements chemically combined together.
A compound is formed as a result of a chemical change.
Explanation: