All the following are characteristic properties of phosphorus. which one is a chemical property?
(a) when exposed to air, white phos- phorus will burn spontaneously, but red phosphorus will not.
(b) red phosphorus and white phos- phorus are solids.
(c) the white form is soluble in liquid carbon disulfide but is insoluble in water.
(d) the red form of phosphorus is in- soluble in both water and carbon disulfide.
(e) the red form melts at about 600 ◦ c, and the white form melts at44◦ c.

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.

Atriple covalent bond involves two atoms sharing three pairs of electrons. true false