What is the common name of this?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Which best explains why an iceberg floats?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.