Show:
The Atom
Periodic Table
Bond, Chemical Bond
Reactions
Acids/Bases
100
he smallest particle into which an element can be divided and still be the same substance
What is an atom?
100
the horizontal rows on the periodic table
What are periods?
100
When chemical bonds form, electrons are shared, gained, or...
What is lost?
100
a process by which substances change to produce new substances with new chemical and physical properties
What is a chemical reaction?
100
a solution that measures 7 on an acid/base scale is said to be...
What is neutral?
200
the negatively charged parts of an atom
What are electrons?
200
each column on the periodic table
What is a group?
200
electrons in the outermost energy level of an atom
What are valence electrons?
200
these are sings that a chemical reaction has taken place...
What is (any of these) a color change, formation of a gas or solid where there was none, release of energy
200
Bases feel_____.
What is slippery?
300
the center of an atom
What is the nucleus?
300
Most elements on the periodic table are classified as...
What is a metal?
300
is closest to the nucleus and can hold up to 2 electrons
What is the first energy level?
300
the starting materials in a reation
What are reactants?
300
An increase in acidity means a lower or higher number on the acid/base scale...
What is lower?
400
the positively charged particles in the nucleus of an atom
What are protons?
400
Other than metals, what two classifications of elements can the periodic table be split into?
What are non metals and metalloids?
400
the two most common types of bonds are...
What are Ionic and Covalent?
400
substances formed at the end of a reaction
What are products?
400
An increase in basicity means a lower or higher number on the acid base chart...
What is higher?
500
the particles of the nucleus that have no electrical charge
What are neutrons?
500
a Russian chemist who first discovered a pattern to the elements in 1869, and predicted that there were elements still to be found.
Who was Mendeleev
500
Most atoms form bonds until they have this magic number of valence electrons...
What is 8?
500
this symbol stands for the "power of Hydrogen" - must be written out properly...
What is pH?