5. You encounter a material that is white, powdery, with a low melting point, and no luster. Is this material likely to be made of a metal or a nonmetal? Justify your answer. (5 pts)

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

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?