You cut a piece of wood and sand it to make a model. What kind of change occurred? A. chemical change B. substance change C. phase change D. physical change

What is the effect of temperature on molarity?

Which particle has a mass that is approximately equal to the mass of a proton? (1) an alpha particle (2) a beta particle (3) a neutron (4) a positron

Percentage of carbon in CCl^4

What happened to the atoms in the heated metal ball so that it didn't fit through the ring?

Molecules and electromagnetic radiation interact. atoms may dissociate, a molecule may rotate, or bonds may stretch and bend. carbon dioxide has four possible vibrations. select the true statements about the vibrations below.

What is the element Ar classified as in the periodic table?

Two objects, one heavy and one light, travel at one of two speeds. Which will have the most inertia?

Which statements correctly describe water boiling in a pot? Air bubbles from the atmosphere are being absorbed. The water's internal kinetic energy is increasing. The water is gaining internal potential energy. The water's temperature is increasing.

Biofuel is any fuel that is produced from living or once living matter in a short period of time, days, weeks, or even months.

How are revolution and year related