A wind turbine is used for what kind of energy transformation? A. mechanical energy to electrical energy B. chemical energy to electrical energy C. sound energy to heat energy D. potential energy to kinetic energy

Give the number of significant figures indicated 78

Why does an egg change color and texture when heated?

Why does sugar dissolve faster in water than vinegar

Chemical reactions can be detected by changes in: a. temperature b. color c. overall mass of the products compared to the mass of the reactants d. density of the products compared to the reactants

The Tapeats Sandstone and Bright Angel Shale contain fossils of trilobites. Trilobites were marine organisms similar to modern-day horseshoe crabs. No other layers contain trilobite fossils. Which conclusion best explains these observations? A.

If an element has 43 electrons, 56 neutrons, and 43 protons, what is its approximate atomic mass?

What did the Cherokee do to assimilate? Check all that apply They invented a writing system. They resisted white settlement. They wrote a constitution. They planted cotton and farmed.

Which of the following correctly compares the radii of Cl and Cl-? Cl has a larger radius than Cl - because Cl has an additional energy shell. Cl has a smaller radius than Cl - because Cl has an expanded electron cloud.

When a stretched string is vibrated up and down with a particular frequency, it causes a standing wave to be produced.

Find the concentration of a solution with 30 grams of solute in 250 grams of solution.