what describes the rate of a nuclear decay reaction ?

a) the reaction is fixed but it can be altered by extreme temperatures

b) reaction rate can be affected by the amount of reactant remaining

c) reaction rate can be affected by temperature and pressure

d) reaction rate is fixed so it cannot be increased or decreased

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean