ASVAB General Science Practice Test 583694

Questions 5
Topics Atom, Atomic Number, Blood Cells, Kelvin Scale, Proton

Study Guide

Atom

An atom is the smallest component of an element that still retains the properties of the element.

Atomic Number

The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.

Blood Cells

Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.

Kelvin Scale

In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0° at absolute zero (-273°C) which is the lowest temperature possible in the universe.

Proton

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