1. What objects in this picture are in motion? 2.What is the unbalanced force in this picture?

3. What happened to the sledder in this picture?

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

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

Chemistry worksheet - i am not sure what they are asking for exactly?