Which information in the periodic table indicates the number of protons in an atom? A. the position of the element in its column B. the element's chemical symbol C. the element's atomic mass D. the element's atomic number

When referring to the solubility of different substances the phrase like dissolves like is often used as a guideline to select an appropriate solvent. the property referenced in like dissolves like is the?

How does the solubility of a gas change with increasing temperature? It increases. It decreases. It is uniform. The temperature does not affect the solubility of a gas.

Which of these is an effect of weathering and erosion in the hydrosphere? A Wind can weather and erode rock formations B Plant roots can weather rocks C Rocks are weathered and eroded by water, wind, living things, and ice D Water and glaciers can

A scientist is observing a cell and notices the presence of starch. What does this tell her about the cell?

Consider a mixture of two gases A and B, confined to a closed vessel. A quantity of a third gas, C, is added to the same vessel at the same temperature. How does the addition of gas C affect the total pressure in the vessel?

Explain how earth plates and lithosphere are related

What is the name for the Fe2 + cation? Iron ion Iron (II) ion Ironide Ferride ion

When designing an experimental investigation, why is it important to test only one variable?

Most fruit juices are a solution of water, sugar, and fruit-specific chemicals. in this solution, identify the solvent and solutes.

What reaction shows one element taking the place of another in a compound?