Ciencias Flashcards
(26 cards)
What is the primary organization of the periodic table?
Elements are organized by increasing atomic number.
What do the columns of the periodic table represent?
The columns represent groups or families of elements with similar properties.
True or False: The rows of the periodic table are called periods.
True
What is the difference between metals and nonmetals in the periodic table?
Metals are typically good conductors of heat and electricity, while nonmetals are poor conductors.
Fill in the blank: The first period of the periodic table contains ___ elements.
2
What are the two main types of blocks in the periodic table?
The s-block and the p-block.
Which block contains transition metals?
The d-block.
What is the significance of the lanthanides and actinides in the periodic table?
They are f-block elements that are placed below the main table.
Multiple choice: Which group is known as the Alkali Metals?
Group 1
What are noble gases known for?
They are inert and do not readily react with other elements.
True or False: All elements in the same group have the same number of valence electrons.
True
What is the atomic number of carbon?
6
Fill in the blank: The periodic table was first organized by ___ Mendeleev.
Dmitri
What is a characteristic of metalloids?
They have properties of both metals and nonmetals.
What is the maximum number of electrons that can occupy the outermost shell of an element?
8
Multiple choice: Which of the following is a halogen?
Fluorine
What does the term ‘periodic law’ refer to?
The properties of elements are a periodic function of their atomic numbers.
True or False: The atomic mass of an element is the weighted average of all its isotopes.
True
What element has the highest atomic number in the periodic table?
Oganesson (Og), atomic number 118.
What distinguishes the transition metals from other metals?
Transition metals can form variable oxidation states.
Fill in the blank: The elements in Group 2 are called ___.
Alkaline Earth Metals
Multiple choice: Which block contains the alkaline metals?
s-block
What is the significance of the zig-zag line on the periodic table?
It separates metals from nonmetals.
True or False: The periodic table is static and does not change over time.
False
