An element has an atmomic number of 68. The number of protons and electron in a neutral atom of the element are?

What is the process where hot water changes to steam?

What tools would you use to measure the density of a rectangular block?

At what part of most rivers dose the water flow quickly

Identify What are the two major motions of Earth as it travels through space?

Which is not among the current strategies used to prevent lead poisoning? A. labels on lead-based paint B. tests of children's blood C. public awareness campaigns D. regulations for home sales

Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. a. Sweat b. Carbon dioxide c. Aluminum d. Vegetable soup

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

For 2H2 + O2 → 2H2O: 4 moles of H2 will react with moles of O2 to produce moles of H2O

Rutherford's experiment showed that subatomic particles a. are the same size and shape as the atom. b. don't take up most of the space in an atom. c. all have similar sizes and characteristics. d. do not influence the behavior of an atom.

Why are electrolytes important in your body? Do you need to drink Gatorade to get them?