Slide 1 A Handful of DNA This hand contains a lot of DNA but we can’t see it. Slide 2 The more closely we look at the hand, the more details we can see. Slide 3 Tiny building…
Slide 1 Properties of Water Slide 2 Water = H 2 O Oxygen and Hydrogen are bonded together by Covalent Bonds O and H share some electrons Slide 3 Water is a Polar Molecule…
Slide 1 SHIELDED METAL ARC WELDING Slide 2 PROCESS Arc melts base metal and end of electrode. Melted electrode crosses arc and is deposited in the weld pool to form weld…