Two solid objects, A and B, are placed in boiling water and allowed to come to the temperature of the water. Each is then lifted out and placed in separate beakers containing 1000 g water at 10.0 °C. Object A increases the water temperature by 3.50 °C; B increases the water temperature by 2.60 °C. (a) Which object has the larger heat capacity? (b) What can you say about the specific heats of A and B?
CHAPTER 2: The Chemistry of Life Element: The simplest form of matter to have unique chemical properties THE CHEMICAL ELEMENTS ATOMIC NUMBER: number of protons – Each element has a different atomic number – The periodic table arranges elements by their atomic number – 24 elements have biological role • Just 6 elements make up 98.5% of body weight – Oxygen – O – 65% – Carbon – C – 18% – Hydrogen – H – 10% – Nitrogen – N – 3% – Calcium – Ca – 1.5% – Phosphorus – P – 1% ATOM: the smallest unit of matter that still retains the properties of an element ATOMIC STRUCTUR