Which statement is most true about technological design? Group of answer choices

There may be multiple solutions to a single problem.

There is no room for creativity in design.

There is only one single best solution to most problems.

What is avogadro’s number, and why is it useful

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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.