In what type of change is matter conserved?

A. physical only

B. chemical only

C. physical and chemical

What weather would create the weakest surfing waves A. Strong winds that blow for a short period of time with a short fetch. B. Weak winds that blow for long periods of time with a long fetch C.

Is tarnishing silver physical or chemical

Choose the correct coefficients to balance the following equation: __CaCO3 + __HC; Produces __CaCl2 + __CO2 + __H2O

The decayed organic material that gives soil its dark brown or black color is called A) clay. B) humus. Eliminate C) loam. D) silt.

Cuales son otras sub particulas atomicas que presenta el atomo

Why reducing power of elements increase, on moving down a group?

Which of the following is not a result of air pollution? A. Smog B. Breathing problems C. Global warming D. Soil erosion

rank the following list of aqueous solutions and solvents according to decreasing vapor pressure the substance with the higher vapor pressure should be placed at top 0.10 M glucose pure water 0.050 M urea 0.20 M sucrose

What does the p mean in 1s22s22p63s1?

Why are alkaline earth metals and alkali metals found in nature by themselves?