Abeka 9th grade Science Quiz 27

gamma

Which type of radiation consists of electromagnetic waves of extremely high frequency and energy?term-0

Atoms tend to react to obtain eight electrons in their outermost electron shell.

What is a statement about the octet rule?

alkali metals

What type of element is found in the first column of the periodic table?

alpha

Which type of nuclear decay causes the ejection of two protons and two neutrons from the nucleus of an atom?

metals

Most of the elements are hard, dense, shiny solids called ____.

half-life

What is the measure of the rate of radioactive decay?

fission

The process that occurs when an atom splits into two smaller atoms is called nuclear _____.

valence

The outermost electron shell contains ____ electrons

carbon

Graphite and diamond are forms of ____.

period

A row on the periodic table of elements