Which of the following is an example of gas?
a. pudding that is spooned from a pan into a cup
b. light that is spreads out to fill the space of a room
c. helium that fills a balloon, causing it to float
d. butter that starts as a cube and is spread on toast

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa