Which of the following are in a chemical family

A. Ca, Sc, K

B. Cu, Ag, Au

C. So, Ge, Sb

If a neutral atom has 12 electrons, how many can be used for creating bonds? A. 12 B. 1 C. 2 D. 4

Sometimes a particle of radiation penetrates a substance and continues on its way, and sometimes it doesn't.

Which scientists discovered cells come from other cells

Which of these is a physical property? malleable, flammable, ability to decompose, ability to rust

What is the molecular geometry, or shape, of beryllium chloride (becl2) ?

Location A and B are adjacent. Location A is at a higher temperature than Location B. What will most likely happen? A. The two locations will experience different air pressures. B. The convection currents of air above the two locations will stop. C.

Based on the kinetic molecular theory, which of the following statements is correct about the particles in a sample of gas? They have negligible kinetic energy. There is negligible force of attraction between them.

Convert the following to scientific notation 24,212,000

The lunulanail platecuticlefree edge protects the nail matrix from the invasion of harmful substances.

Calculate the force of Attraction between two masses one of 5kg and one of 8kg whose center are 10 cm apart