What happens to the atomic number of an atom as you go across a period of the periodic table from left to right

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

What semimetal can form four single covalent bonds.

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean