Basic Concepts of Chemistry

What is the study of matter and its properties called?

Which of the following is a state of matter?

What is the smallest unit of a chemical element?

Which gas do plants absorb from the atmosphere for photosynthesis?

What is water chemically known as?

Which metal is liquid at room temperature?

What is formed when two or more different elements chemically combine?

The process of a substance turning directly from a solid to a gas without passing through a liquid phase is called:

Which element is essential for human respiration?

What is common table salt chemically known as?

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