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Web27 Questions Show answers Question 1 30 seconds Q. How many different elements are in this chemical formula: C 2 H 2 ClK 3 answer choices 6 8 2 4 Question 2 30 seconds.
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WebBoth, elements and compound are pure chemical substances. Physical changes: A change which does not affect the substance. Physical forces cannot always break down.
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WebElements – Elements constitute the simplest chemical substances in which all the atoms are exactly the same. Compound Definition: Compounds – Compounds are chemical substances made up of two or more elements.
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WebElement The substances made up of only one type of atom are called elements. Compound When two or more atoms combine through a chemical reaction in a fixed.
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Web Compounds are pure substances whereas mixtures are impure. A compound always has a fixed chemical composition by mass, which means that the.
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WebMatter : Elements & Compounds Quiz. Substances are a form of matter that has uniform and unchanging compositions. Salt is a substance. Water is a substance. Oxygen is a.
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