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Questions in chemistry

📝 Answered - True or False? An element's reactivity is determined by the number of protons found in an atom of the element.

📝 Answered - What type of reaction is: \[ \text{FeS} + 2 \text{HCl} \rightarrow \text{FeCl}_2 + \text{H}_2\text{S} \]

📝 Answered - A chloride dissolves in water to form a colored solution. The chloride could be: 1. HCl 2. KCl 3. CaCl₂ 4. NiCl₂

📝 Answered - What information about an atom's properties can you read from the periodic table?

📝 Answered - Suppose you stir a little baking soda into water until the water looks clear again. How could you prove to someone that the clear material is a solution, not a compound?

📝 Answered - On the Earth's surface, transported materials are more common than residual materials. This condition is mainly the result of:

📝 Answered - What state of matter is carbon at room temperature?

📝 Answered - List two substances that are solid, two that are liquid, and two that are gas at room temperature.

📝 Answered - What runs along the top of the troposphere?

📝 Answered - State three factors required for there to be a chance of life existing somewhere other than Earth.