How will electron pairs behave towards one another according to VSEPR? a. They will arrange themselves to be far apart from each other.
b. Electron pairs are not affected by other electron pairs.
c. They will be oriented close to each other.
d. The effect depends on the electronegativity of the atoms involved.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks. energy was destroyed inside the blocks. energy was absorbed into the blocks from outside the system. energy was transferred from the warmer block to the cooler block.

The arrangement of particles is most ordered in a sample of