ASVAB General Science Practice Test 999898

Questions 5
Topics Chemical Change, Fermentation, Magnetism, Proton, Stomach

Study Guide

Chemical Change

During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).

Fermentation

If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.

Magnetism

Simple magnets have two poles, north and south, and opposite poles attract each other (N attracts S, S attracts N). Likewise, the same pole of two magnets repel (N repels N, S repels S). The Earth has a magnetic field and North and South Poles which enables the use of a magnetic compass to determine direction.

Proton

A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.

Stomach

Food is mixed with gastric acid and pepsin in the stomach to help break down protein.