Which of the following is not a potential sign of chemical change?

a. release of gas

c. change of color

b. evaporation of water

d. production of gas

Explain how you experience different aspects of the sense of touch such as pain, pressure, or temperature.

J. J. Thomson's experiments supported the existence of a particle that deflected away from a negative charge and toward a positive charge.

What common characteristic is generally shared by the elements at the center of a period? A. They are nonmetals. B. They have the lowest atomic mass. C. They are the least reactive elements. D. They have the most orbitals.

Consider the location of barium, chlorine, iodine, and strontium on the periodic table. Electronegativities Which type of atom has the strongest attraction for electrons in bond formation? barium (Ba) chlorine (Cl) iodine (I) strontium (Sr)

A 4Kg rock is rolling 10m/s find it's kinetic energy

The volume of oxygen required for complete combustionof a mixture of 5 cm3 of ch4 and5 cm3 c2h4

What part of the digestive system removes most of the water from food? Question 4 options: Small intestine Stomach Large intestine Esophagus Save

In which type of chemical bonding are electrons shared among all atoms in the substance?

As pressure decreases, density: A. decreases B. increases C. remains the same

Use the unbalanced equation NH3+O2--> NO+H2O to find the mole ratio between NH3 ad O2