Drag each label to the correct image. Match each of Earth's spheres to the materials that make up the sphere.
atmosphere
hydrosphere
biosphere
geosphere

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.

How many joules of heat are required to raise thetemperature of 750 g of water from 11.0 °c to 19.0 °c?