Drag each tile to the correct location.
gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud.
its temperature stays well
below 14 million kelvin.
its volume shrinks and density
increases due to gravity.
its temperature surpasses
14 million kelvin
its hydrogen atoms shed their electrons.
it is spread out, with a greater volume and
lesser concentration of elements.
its hydrogen atoms retain their electrons.

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.