1. What determines the chemical and physical properties of an element? 2. How are chemical and physical properties the same, how are they different?

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town