Friday (9/9). Spillway gates will be opened at 10 a.m. Monday (9/12) to release 1,000 cubic feet per second through the spillway, which runs from the lake to the Lackawaxen River. The release rate will be increased gradually to 2,000 cubic feet per second, and held at that level.
Rust-compound Air-mixture Helium-element soil-mixture Sea water-mixture salt-compound An element is made of a single pure substance, matter-Helium, hydrogen, etc. A compound is a pure substance made of elements chemically put together. Not easily separated.
Compounds. When atoms of different types of elements join together, they make molecules called compounds. Water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. This is why it's called H 2 O. Water will always have 2 times the number of hydrogen atoms as oxygen atoms.olecules are not only made up of different types of atoms but also different ratios. Like in the water example above, a water molecule has 2 hydrogen atoms and 1 oxygen atom.