When is a model used in science?

A) to demonstrate something that would otherwise be too complex to study in real life

B) to demonstrate something that is too large or too small in real life

C) both of the above

Do baking bread release or absorb energy

Use the periodic table to answer the following question. How many valence electrons does magnesium (Mg) have?

What did Bohi's model of the dom inchide that Ruthextends model did not have O o a nucleus energy levels electron clouds smaller cantides

Can you explain how population changes in size

Why do the pvc plastic wells used in this weeks elisa need to be sticky on the inner walls and how may your results change if a different non-adherent plastic was used instead?

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.

Choose The units of 1/4πε0 are: A. N2C2 B. N • m/C C. N2 • m2/C2 D. N • m2/C2 E. m2/C2

What does a fern ultimately depend on as an energy source?

According to the Doppler Effect, which statement is true about a sound as it approaches you and then moves away. A) As the source approaches you, the sound waves are compressed so the pitch of the noise increases.

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?