5. Hydrogen chloride is decomposed by an electric current to hydrogen (H2) and chlorine (Cl2). Is hydrogen chloride homoatomic or heteroatomic. Why? A sentence or two of explanation.

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Q: 1. What is physical change? A chemical change?|

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A: The term density can be defined as the measurement which can be used to compare the amount of the…

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A: 1 kilocalories = 4184 joules1 calorie = 4.184 joules.

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A: The answer to the following question is--

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Q: How are the molecules in oxygen gas, the molecules in hydrogen gas, and water in molecules differ?

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A: This is an example of chemical change.

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A: The sand,salt and water is an example of Heterogeneous mixture.

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A: The relationship between mass in ounce and g s  1 ounce = 28.35 g

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.