Who designed the current Periodic table of elements?
Dimitri Mendeleev
100
Heat and electricity are conducted easily by _______________.
metals
100
Elements on the left side of zig zag line are classified as ________.
Metals
100
This element has 20 Protons. What is it's identity?
Calcium (Ca)
100
What is the chemical symbol for Lead?
Pb
200
No two elements have the same _________________ number.
Atomic number
200
True or False - Metals do not have luster.
False
200
These elements are on the right of the zig zag line
Nonmetals
200
This element has 47 Electrons. What is the element's identity?
Silver (Ag)
200
What is the meaning of periodic?
This is the the meaning of something that repeats in a certain pattern.
300
The elements to the right of the zigzag are called ______________________.
non-metals
300
Can solid nonmetals be easily broken?
True
300
Elements in the same Group has the same # of _____________
Valence Electrons
300
This element is in the same period as Phosphorus and has less protons than Magnesium.
Sodium (Na)
300
What is the chemical symbol for Copper?
Cu
400
How many elements are in the periodic table?
118 known elements are found on the current table
400
Where are the metalloids located?
on the zigzag line
400
Elements that is Malleable and Dull would be considered a ____________
Metalloid
400
This element has the same reactivity as Bromine and fewer protons than Chlorine
Fluorine (F)
400
What are chemical symbols?
These are the shortened name for elements.
500
What are the the 3 metal groups?
Metals, metalloids and non-metals
500
What are the differences between non-metals, metalloids and metals?
non-metals are usually gases and are not good conductors, metals are malleable and good conductors and metalloids an have properties of both and are semi-conductors
500
An element that is a brittle solid and does not conduct electricity would be found where on the Periodic Table?
Left side, Stairs, Right side
Right side (Nonmetal)....But not Group 18 (gases)
500
This element has the same reactivity as Gold and less protons than Silver
Copper (Cu)
500
Elements cannot be __________________ other substances.