5. Catalysts increase the speed of a reaction by . A. lowering the activation energy of the reaction B. increasing the concentration of the reactants C. increasing the energy of the reactants D. increasing the entropy of the reactants E. increasing the enthalpy of the reactants

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils