An object starts at position 12 on a horizontal line with a reference point of O. What is the position of the object if it moves 14 units to the left?
O-26
O-2
O 2
O 26

The clouds are grey and ground is wet. a quantitative b qualitative

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.

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false