Justine observed that the water level in a dish placed on the window sill decreased after a few days, and vapor formed. what best explains that she observed a physical change? vapor can be easily condensed back to form water. water and its vapor react with substances in different ways. the molecular composition of water changed when the water level decreased. bonds between hydrogen and oxygen broke when the water level changed.

State the formula for density in words and mathematical symbols

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

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