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Questions in chemistry

[Homework Help] True or False? An element's reactivity is determined by the number of protons found in an atom of the element.

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

[Homework Help] A chloride dissolves in water to form a colored solution. The chloride could be: 1. HCl 2. KCl 3. CaClâ‚‚ 4. NiClâ‚‚

[Homework Help] What information about an atom's properties can you read from the periodic table?

[Homework Help] 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?

[Homework Help] On the Earth's surface, transported materials are more common than residual materials. This condition is mainly the result of:

[Homework Help] What state of matter is carbon at room temperature?

[Homework Help] List two substances that are solid, two that are liquid, and two that are gas at room temperature.

[Homework Help] What runs along the top of the troposphere?

[Homework Help] State three factors required for there to be a chance of life existing somewhere other than Earth.