Aluminum, carbon, and calcium are examples of what type of matter?

element
heterogeneous mixture
compound
solution

How to solve 4 nh3(g) + 5 o2(g) > 4 no(g) + 6 h2o(g) in chemistry

When the water vapor cools it condenses select a number that represents his process on the

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.