CHAPTER 7 Review Flashcards
Be able to label the parts of an atom
electron, proton, neutron, nucleus
Compounds are molecules, but molecules are _______ _______ compounds.
not always
__________ bonding occurs when atoms share electrons.
Covalent
An ________ is the smallest piece of an element that can be recognized as that element.
atom
An ion is an atom that has ________ or ________ electrons.
gained / lost
Acids that dissolve in water are called _______.
hydrogen ions
Elements that possess similar characteristics and react similarly with other elements are grouped in _________.
categories
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. Formed when an acid ddd a base neutralize each other
salt
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. slippery to touch
base
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. sour taste
acid
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. helps digest food in the stomach
acid
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. usually composed of a metal and a nonmetal
salt
IDENTIFY THE CHARACTERISTICS AS BELONGING TO AN ACID, BASE, OR SALT. bitter taste
base
What are molecules formed from two or more different elements called?
compounds
The atomic number is based on the number of ______ and element has.
protons
The horizontal rows on the periodic table of elements are called ___________.
periods
Which scientist developed the periodic table of elements?
Mendeleev
The atomic mass is the approximate number of ________.
Protons and neutrons
Substances containing only one kind of atom are called __________.
elements
Which scientist developed a simplified model of an atom?
Bohr
A substance that changes color when exposed to acid or base solutions is called what?
indicator
How many atoms of carbon are in H2CO3?
One
Strong acids that can burn the skin are…
corrosive
Be able to label the periodic cell
know atomic mass, atomic number, chemical symbol, element name
If the element copper has 29 protons, how many electrons does it have? how do you know that?
29 electrons - because in a normal atom there are the same number of electrons as protons
The study of matter is called…
chemistry
