The release of a gas from a chemical reaction is very quick. a scientist wants to measure what is released, but in small increments. what would allow the scientist to change the rate of the reaction so the results could be measured?

an enzyme
an inhibitor
a depressant
an accelerator

Which type of reaction always has an element and a compound as reactants

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine