What is the source of energy for the Sun?

1 Choice 1

hydrogen fusion

2 Choice 2

internal combustion

3 Choice 3

nuclear fission of metals

4 Choice 4

burning of solar gases

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?