Test 10 Science Chapter 6

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

The semimetal that is used to make computer chips is called

Substance composed of only one type of atom

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

The measure of the pull of gravity on an object

Highly reactive elements that tend to from compounds with alkali and alkaline earth metals

The rapid reaction of any substance

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

A compound made of molecules

A compound made of charged atoms

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

The _______ of an object changes from place to place

Anything that takes up space and has mass

The tiny particles of which all matter is composed

The halogen that is added to toothpaste and drinking water is

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

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

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

The organized arrangement of all known elements

The three main groups of elements are

Iodine, when heated, does not melt but instead _______________

Lacking an electrical charge

The two particles that make up the nucleus of an atom

If two objects have the same volume but different densities the object made of the denser substance weighs _______

The simplest kind of atom with one proton and one electron

Formed by electrons zooming around the nucleus of an atom

Two or more atoms firmly bound together from a

The number of protons an atom has

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

What kind of charge does a proton have

The most abundant element at the surface of the earth

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

Substance composed of one or more types of atoms bonded together

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

The only metal that is liquid at room temperature is

Most metals are

A neutral atom has a Equal number of protons and electrons

The amount of matter that makes up an object

The densest of the everyday metals is

The hardest of all known substances

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

Two electrons repel each other

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

The amount of matter in one unit of volume