As the first five elements in Group 15 are

considered in order of increasing atomic number,

first ionization energy

(1) decreases

(2) increases

(3) decreases, then increases

(4) increases, then decreases

Which component within a nuclear reactor directs neutron bombardment? turbine generator control rod chain reaction

When energy is transferred to ocean water from moving air above it what happens to most of the energy a. it reflects off the surface of the water b. it pushes the water forward c. it moves through the water d. it causes the water to evaporate

A key strategy in sustainable farming is integrated pest management (IPM) which is the combination of different techniques to create an effective pest control system.

The system is said to be in dynamic equilibrium when: Select one: a. there is no longer any net change in the concentrations of products or reactants. b. the forward and reverse reactions come to a halt. c. None of these d.

How does a one cell amoeba live?

Find the concentration of a solution with 30 grams of solute in 250 grams of solution.

What unit is used to measure cell potential? A. electron Kelvin oxidation number OD. volt

What term is used to describe a testable modle

When the equation for the combustion of ethane, C2H6, is correctly balanced, the coefficient on oxygen is:

Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. the ending substances did not look the same as the starting substances.