6th Science Chapter 7 (Bob Jones 4th ed)

An atom is the smallest piece of an element that can still be recognized as that element

When positively and negatively charged ions attract each other they form a(n) _____.

A stable atom has the same number of protons as ______

Dmitri Mendeleev developed the periodic table of elements, which _____ elements

T or F? The pH scale can be used to indicate whether a solution of a substance is neutral

Acid, base, or salt?: helps digest food in the stomach

Acid, base, or salt?: forms hydrogen ions when dissolved in water

Acid, base, or both?: changes colors of an indicator

Acid, base, or both?: Lemons, vinegar, and tomato juice

T or F? In a covalent bond, atoms share ions

Atoms share electrons in a(n) ______

Acid, base, or salt?: usually composed of a metal and a nonmetal

The process of joining different types of atoms to form a different substance is called

The atomic number is based on the number of ______ an element has

Acid, base, or salt?: chalk

The horizontal rows on the periodic table of elements are called _____

The number of protons plus neutrons is the atom's approximate ____

When symbols and numbers are used to shorten the name of a compound, it is called a(n) ____

_____ are substances that contain only one kind of atom

T or F? Particle accelerators are used to smash atoms

Abbreviations for the names of the elements are chemical _____

T or F? Compounds are molecules, but molecules are not always compounds

Acid, base, or salt?: forms hydroxide ions when dissolved in water

Acid, base, or both?: soap, bleach

The vertical columns of the periodic table are called _____

What scientist developed a model of an atom based on the idea that electrons move in shells.

Acid, base, or salt?: antacid tablets

You can determine the concentration of acids or bases in a solution by using _____

Which part of the atom has a negative charge?

Acid, base, or both?: sour taste

What scientist developed the periodic table of elements?

Atoms that have gained or lost an electron are called ____

Molecules formed from two or more different elements are called _____

Acid, base, or both?: bitter taste

What is a household item that you would NOT want to put on an acidic fire ant bite?

Bases that dissolve in water are called ____

T or F? Chemistry is the study of matter

A substance that changes color when exposed to acid or base solutions is called a(n) ____

Which part of the atom has a positive charge?

Strong acids that can eat away metals are said to be _____

Acid, base, or salt?: formed when an acid and a base neautralize each other

Acid, base, or both?: slippery to the touch

T or F? Electrons travel around the nucleus in a space called a shell

T or F? In a stable atom, the outermost shell is completely closed or filled up

T or F? An ion is an atom that has gained or lost electrons

T or F? A neutral solution is neither acidic nor basic

A _______ reaction occurs when a compound is broken down into simpler compounds

The center part of the atom is the ______

Acid, base, or both?: can burn; can be corrosive