Which is evidence that elements combine to form new compounds? A) melting a solid
B) freezing a liquid
C) moving a piece of metal with a magnet
D) Pouring two liquids together to create a solid

Why is the structure of molecule important to its function?

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?

Describe the basic structure of the atom