Chemistry Practice Questions and Answers (Q&A)

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The answer to this is A. A polar covalent bond is present in the water. This is a type of bond wherein the different electrons are closer to the oxygen nucleus as compared to the hydrogen nucleus. What is a polar covalent bond in the first place? This is known to be an unstable type of bo...Read More

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The correct answer to this question is A, 2. Strontium is a chemical element. It is metal, which is soft and silver. Strontium has several uses. One important use is that it blocks X-rays that TV tubes emit. Strontium is also what allows glow in the dark paint to do what its name...Read More

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The answer to this is B. A Compound. A compound is composed of two or more atoms depending on the two elements that are mixed together in order to mix it. These elements are pure which means that a compound is also pure. Take note that the elements that are present in the compound are usually...Read More

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All metals are conductors of electricity, however, each type of metal has different conductivity level, and thus, some are more conductive than the other. For example, the Copper metal is one of the most common, if not the most common metal used to conduct electricity. It is a highly conductive...Read More

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A few properties distinguish something to be a heterogeneous mixture. Included in this are mixtures that do not evenly mix, have more than one phase, particles are not uniformly distributed, and it is easily seperated physically. Some examples of these types of mixtures includes salt and...Read More

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Electrons are the particles that have a negative charge. Protons are the particles that have a positive charge. There are also neutrons which have a neutral charge. A lot of these particles are found in atoms and molecules. They do different things. The electron was discovered back in 1897 by...Read More

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The chemical formula Fe2(SO3)3 indicates nothing above. Chemical formulas are used in chemistry to refer to compounds and elements. There are various different types of compounds, having different types of bonding among them such as covalent bonding and ionic bonding. Chemical formulas ar...Read More

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Isn't an element only one single atom? And a compound more than one?

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A is the right answer. Alpha radiation or alpha particles contain two neutrons and two protons that are also known as the helium-4 nuclei. Due to their combined mass and their charges, they have a strong interaction with matter. Their velocities can only penetrate a sheet of paper up to...Read More

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