Which of the following is a pure substance that can be separated by physical means and can't be decomposed into other substances by chemical means

A: element

B:molecule

C: compound

D: mixture

Which group of elements are the most reactive

To measure velocity you must know this

Explain how valence electrons are involved in ionic and metallic bonding

What happens when you put on deodorant? does it absorb heat and give off thermal energy

A sample of gas is held at constant pressure. Increasing the Kelvin temperature of this gas sample causes the average kinetic energy of its molecules to (1) decrease and the volume of the gas sample to decrease (2) decrease and the volume of the gas

Which of the following changes would decrease the rate at which a solid solute dissolves in a liquid solvent? A. Decreasing pressure B. Decreasing surface area C. Increasing rate of stirring D. Increasing temperature

Helium, neon, and argon are examples of A) metals B) metalloids C) noble gases D) transitional metals

How many moles of MgS2O3 are in 201 g of the compound

What is the process of discovery that allows us to link abservations with actual facts? Science Inquiry Mathematics Repetition

Elastic energy is stored when an object is stretched. Is this an example of potential or kinetic energy? A. Neither B. Both d C. Kinetic O D. Potential Reset Selection