What is a group in the periodic table of elements?

Question 4 options:

the elements that have the same atomic number

the elements that have similar densities and atomic sizes

the elements that are in the same column of the periodic table of elements

the elements that are in the same row on the periodic table of elem

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Identify and describe the three ways that mutations affect organisms.

All forces cause motion? true or false