Chapter 1 REVIEW Flashcards
How many electrons will be in chloride ion with a charge of -1, if chlorine has an atomic number of 17?
18
Which is NOT one of the 4 major elements of human body ?
CALCIUM
Atoms that have the same number of protons but different number of neutrons are called ____
ISOTOPES
How many electrons are in the OUTERMOST shell of an atom with 15 electrons ?
5
The INNERMOST shell of an atom holds ____ electrons ?
2
A neutral atom with an atomic number of 8 and a mass of 17 has _____ protons ?
8
What predicts the element to which the atom belongs ?
TOTAL NUMBER OF PROTONS
The 4 elements of human body are :
OXYGEN
NITROGEN
HYDROGEN
CARBON
If an atom of Iron has an atomic number of 26, how many protons will Iron have ?
26
What does the atomic number represent ?
PROTONS IN AN ATOM
What calculates the mass number ?
SUM OF PROTONS and NEUTRONS
What varies from one Isotope of an element to another Isotope of the same element ?
MASS NUMBER
Carbon-13?
REPRESENTS AN ISOTOPE OF CARBON WITH A MASS NUMBER OF 13
Which molecule contains POLAR COVALENT BONDS ?
H2O
Blood is a _____
SUSPENSION
Depending on _____ determines how likely it is to form bonds and what types of bonds it will form ?
VALENCE ELECTRONS
C2H6 :
NONPOLAR
Ion ?
AN ATOM THAT HAS GAINED OR LOST ELECTRONS
How do Ions form Ionic Bonds ?
IONS OF OPPOSITE ELECTRICAL CHARGES ARE ATTACHED TO EACH OTHER TO BALANCE THE CHARGES
Polar covalent bonds are shared_____
UNEQUALLY
Chemical bonds from STRONGEST to WEAKEST :
COVALENT, IONIC, and HYDROGEN
What distinguishes hydrogen bonds from covalent bonds ?
HYDROGEN BONDS CAN ONLY FORM BETWEEN MOLECULES
Atoms that satisfy the OCTET rule are said to be :
INERT
Which atom is Inert ?
ATOMIC NUMBER OF 10