In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Question: If something has a small surface area and is being mixed with something else it will react 
 Answer: slower
Surface Area of Reactants When a solid substance is involved in a chemical reaction, only the matter at the surface of the solid is exposed to other reactants. If a solid has more surface area, more of it is exposed and able to react.

Question: Tina cools some oxygen gas. The oxygen particles will move 
 Answer: slower
If the gas is heated, the particles will move faster as they gain more energy.

Question: John was viewing a patient's vital signs at the hospital. He could see clearly that the more oxygen to the cells, the pulse rate would become 
 Answer: Lower

This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

