We Are Family - Period!
True or False: There are more metals than non-metals on the periodic table.
TRUE
What does inert mean? a. reactive OR. b. un-reactive
un-reactive
The atomic number of aluminum
13
Which particle is the smallest? proton, neutron or electron?
electron
An element that is brittle and shiny is:
A. metal, B. metalloid, C. non-metal
B. metalloid
How many elements are in the first period of the periodic table?
2
An isotope has different number of ____________.
neutrons
How many electrons does an atom of gold (Au) have?
79
Most of the volume of an atom is composed of:
A. nucleus
B. empty space
empty space
Most non-metals are good/bad conductors
bad conductors of electricity
What family is Mg a member of?
Alkaline Earth metal
A neutral atom has the same number of _______ and _______
electrons and protons
How many electron shells does an atom of Zn (zinc) have?
Zn = atomic number is 30 so it has 30 protons. Atomic mass is 65. 65-30=35 neutrons. That means there are 30 electrons. 2 in the 1st shell, 8 in the second shell, 18 in the 3rd shell, 2 in the 4th shell = 30
4 shells
The nucleus of the atom has a ______ charge
positive charge (protons and neutrons)
How many elements are in the second period of the periodic table?
8
Which element is in the same period as Na and same group as O?
Sulfur (S)
Has a negative charge
electron
The scientist that conducted the gold-foil experiment
Rutherford
Which phrase best describes an atom:
A. A positive nucleus surrounded by a cloud of negative charges
B. A positive nucleus surrounded by a hard negative shell
C. A negative nucleus surrounded by a cloud of negative charges
A positive nucleus surrounded by a cloud of negative charges
Dull and non-conductive is most likely:
a. metal, B. non-metal, c. metalloid
B. non-metal
Atoms in the family of noble gases have ___ electrons in the outermost shell.
a. complete set
b. few
c. half a complete set
a complete set
What is on the left side of an equation? reactant or product?
reactant
The nucleus is the part of the atom that:
A. consists mostly of empty space
B. has a negative charge
C. contains most of the atom's total mass
C. contains most of the atom's total mass
What is the mass number of an atom that has 29P, 29E and 36N?
65
If an element if brittle and shiny it is most likely a
a. metal
b. non-metal
c.metalloid
metalloid