All protons are _____________
a. positively charged particles
b. negatively charged particles
What is "positively charged particles"
100
True or False:
Metals are good conductors of electricity, malleable, and ductile.
True
ductile- capable of being hammered out thin
100
On a periodic table the number on the top is the _______
What is "the atomic number"
200
Name the scienctist that discovered that electrons surround the nucleus in specific areas called energy levels.
Who is "Neils Bohr"
200
Neutral is the same things as ________
What is "no charge"
200
On a periodic table, the horizontal row of elements is called __________
What is "the periods"
300
Which scientist discovered that all matter is composed of tiny invisible particles called atoms?
a. Ernest Rutherford
b. JJ Thomson
c. John Dalton
d. Niels Bohr
Who is John Dolton
300
What elements make up H2O
What is 2 hydron and one oxygen
300
On a periodic table, the ELEMENTS to the LEFT of the dark line are Metals, Nonmetals, or alkaloids.
What is "metals"
400
What determines the atomic number of an element?
a. the mass of the atom
b. electrons in the atom
c. neutrons in the atom
d. protons in the nucleus of an atom
What is "d. protons in the nucleus of an atom"
400
Elements in the same vertical column have __________
What is "similar but not identical properties"
400
The Elements found in a PERIOD:
a: have the same properties
b. do not have similar properties
c. belong to the same familiy
What is "do not have similar properties"
500
All neutrons are
a. positive
b. negative
c. neutral
What is "c. neutral"
500
Who created the periodic table based on the atomic number and the arrangement of electrons in its energy levels.
Who is Henry Moseley
500
On the periodic table, the two rows that are by themselves on the bottom of the table are ___________.
a. too big to fit in the rest of the table
b. are not elements
c. are rare-earth elements
d. none of the above