Basic Chemistry
Pure substances consisting of one type of atom that cannot be broken down or changed into another substance
Element
Compounds must be composed of at least __ elements in specific ratios
2
Atoms are the basic unit of ________.
matter
T/F:
On the periodic table, groups are the horizontal rows.
False
All carbon atoms have ___ protons
6
Elements combine with other elements to form
Compounds
Compounds are bonded together through _______ forces
chemical
What does the nucleus of an atom consist of
protons and neutrons
Where are the transitional metals located on the periodic table?
A. Group 8
B. Group 0
C. Group 2
D. The middle portion
The middle portion
DAILY DOUBLE!
The Periodic Table was created by Dmitri Mendeleev in _____
DAILY DOUBLE!
1869
______ are between atoms and influence the molecules properties
bonds
What charge can ions have?
A. positive
B. negative
C. Both A & B
C. Both A & B
Ions can be either positively or negatively charged
an electron cloud
Which group on the periodic tables are Noble Gases located?
A. Group 1
B. Group 18
C. Group 17
D. Group 2
B. Group 18
Which family in the Periodic Table contains all radioactive elements
Actinide Series
In a ______ bond, each atom equally shares the combined electrons
covalent
Covalent compounds occur between:
A. metals
B. non metals
C. both metals and non metals
B. non metals
Electrons in the outermost shell of an atom are known as
valence electrons
The atomic number is the number of ______ in an atom and it defines the element.
protons
What is the SECOND most reactive group in the periodic table
Alkaline Earth Metals
Hydrogen Bonds are commonly found between ______ & ______
Water molecules and proteins
Covalent compounds are also known as _______ compounds
molecular compounds
Electrons are small, negatively charged particles located in _______ _______
atomic orbitals
Which group on the periodic tables are Alkaline Earth Metals located?
A. Group 1
B. Group 18
C. Group 17
D. Group 2
Group 2
Group 18 of the periodic table is also known as ________
Group Zero