Abeka 6th Grade Science Test #10 Chapter 6

Two electrons _____ each other.

If two objects have the same volume but different densities:

The densest of the everyday metals is:

The organized arrangement of all known elements:

The number of protons an atoms has:

The simplest kind of atom with one proton and one electron:

The measure of the pull of gravity on an object:

The only metal that is liquid at room temperature:

The amount of matter that makes up an object:

The halogen that is added to toothpaste and drinking water is:

Two or more atoms firmly bound together form a:

The halogen that is added to table salt to prevent a deficiency disease is:

The halogen that is useful as a bleach and a germ-killing agent is:

A compound made of molecules:

The three main groups of elements are:

A very hard metal which is an important ingredient in stainless steel is:

The element that is the basic building block of all the compounds is:

The elements which do not combine with anything else except under unusual circumstances:

The metric unit that is used to measure an object's mass:

The most abundant element at the surface of the earth:

The ________ of an object changes from place to place.

The semimetal that is used to make computer chips is called:

The hardest of all known substances:

A process in which atoms of elements or compounds are rearranged to form new substances:

A neutral atom has an ______ number of protons and electrons.

The tiny particles that swarm at tremendous speeds around the core of an atom:

The rapid reaction of any substance with oxygen:

The study of what substances are made of and how one substance can be changed into another:

Iodine, when heated, does not melt but instead _________, or turns to gas.

The amount of matter in one unit of volume:

Lacking an electrical charge:

The colorless, odorless gas that makes up 78% of the earth's atmosphere:

The proton has a _________ charge.

A _______ is a substance composed of one or more types of atoms bonded together.

A compound made of charged atoms:

Most metals are:

Formed by electrons that are in orbit the same distance from the nucleus:

The tiny, extremely dense core at the center of an atom:

The tiny particles of which all matter is composed:

Formed by electrons zooming around the nucleus of an atom:

Anything that takes up space and has mass:

An ______ is a substance that is composed of only one type of atom.

The highly reactive elements that tend to form compounds with alkali and alkaline earth metals:

The two particles that make up the nucleus of an atom: