Chemistry revision Flashcards
What is reactivity in chemistry?
Reactivity refers to the tendency of a substance to undergo chemical reaction and form new products.
True or False: Alkali metals are highly reactive and must be stored in oil.
True
Fill in the blank: The reactivity series is a list of metals arranged in order of their _____ reactivity.
decreasing
Which group of elements is known for having low reactivity?
Noble gases
What happens to the reactivity of metals as you move down Group 1 of the periodic table?
The reactivity increases.
What is reactivity in chemistry?
Reactivity refers to the tendency of a substance to undergo chemical reactions.
True or False: Noble gases are highly reactive.
False
Fill in the blank: The reactivity of metals generally _____ as you move down Group 1 of the periodic table.
increases
Which group of elements is known for their high reactivity?
Alkali metals (Group 1)
What is the general trend in reactivity for nonmetals as you move across the periodic table?
Reactivity increases from left to right.
Which element is the most reactive nonmetal?
Fluorine
Multiple Choice: Which of the following metals is the least reactive? A) Sodium B) Potassium C) Gold D) Lithium
C) Gold
What happens when alkali metals react with water?
They produce hydrogen gas and a metal hydroxide.
True or False: Reactivity is the same for all elements in a group.
False
Name one factor that affects the reactivity of an element.
Atomic size or ionization energy.
Fill in the blank: Halogens react with metals to form _____.
salts
Which alkali metal is stored under oil to prevent reactions with moisture in the air?
Sodium
What is the result of the reaction between calcium and water?
Calcium hydroxide and hydrogen gas.
Multiple Choice: Which of the following is not a property of reactive metals? A) They are shiny B) They are brittle C) They conduct electricity D) They react with acids
B) They are brittle
What do we call the series that ranks metals based on their reactivity?
Reactivity series
