C1 modern periodic table Flashcards
What is the modern periodic table based on?
The modern periodic table is based on the atomic number of elements.
True or False: Elements in the same group of the periodic table have similar chemical properties.
True
Fill in the blank: The elements are arranged in order of increasing ______ in the periodic table.
atomic number
What do the rows in the periodic table represent?
The rows represent periods, which indicate the number of electron shells.
Which group contains the alkali metals?
Group 1
What is the atomic number of carbon?
6
True or False: Noble gases are found in Group 0 of the periodic table.
True
What is the main characteristic of transition metals?
They can form variable oxidation states and are often good conductors of electricity.
What is the term for the vertical columns in the periodic table?
Groups
Which element is found in Group 7?
Fluorine
What do elements in the same period have in common?
They have the same number of electron shells.
Fill in the blank: The alkali metals are very ______ and react vigorously with water.
reactive
What is the chemical symbol for sodium?
Na
True or False: Nonmetals are typically good conductors of heat and electricity.
False
What is the main property of metals in the periodic table?
They are usually malleable, ductile, and good conductors of heat and electricity.
Which group contains the halogens?
Group 7
What happens to the reactivity of alkali metals as you move down the group?
Reactivity increases.
Which element has the atomic number 1?
Hydrogen
Fill in the blank: The elements in Group 8 are known as ______ gases.
noble
What type of elements are found on the right side of the periodic table?
Nonmetals
What is the significant trend in atomic size as you move down a group?
Atomic size increases.
Which element is a metalloid?
Silicon
Fill in the blank: The periodic table was first organized by ______.
Dmitri Mendeleev
What is the main characteristic of noble gases?
They are inert and do not readily react with other elements.
What is the chemical symbol for chlorine?
Cl
True or False: All elements in the periodic table have a unique atomic number.
True
What trend is observed in the melting and boiling points of metals as you move across a period?
They generally increase.
