9.29.R - Lesson Review: Elements & Compounds / Periodic Table: Basics / Periodic Table: Metals Flashcards
Describe the composition of the nucleus of an atom.
it is composed of protons, neutrons, and electrons
it is composed of protons and electrons
it is composed of protons
it is composed of protons and neutrons
it is composed of protons and neutrons
A _____ is when two or more elements chemically combine.
mixture
solution
compound
element
compound
Which subatomic particle is NOT found at the center of the atom?
proton
electron
neutron
nucleus
electron
The part of the element that defines it is the element’s number of _______________.
atoms
electrons
protons
neutrons
protons
The atomic number is the number of _________ in an atom.
atoms
protons
electrons
neutrons
protons
Who developed the early version of the periodic table based on atomic mass?
Christopher Aisenvult
Rick Baesley
Henry Moseley
Dmitri Mendeleev
Dmitri Mendeleev
Members of the alkaline earth elements have several things in common. They are __________.
metalloids with two valence electrons
nonmetals and are nonreactive
metals that are not very reactive
metals with two valence electrons
metals with two valence electrons
Lithium, sodium, and potassium are examples of ____________.
alkali metals
alkaline earth metals
nonmetals
transition metals
alkali metals
The ability of an element to bend is called _____________.
conductivity
reactivity
ductile
malleability
malleability
The ability of a metal to transmit heat, electricity, or sound is called __________________.
reactivity
malleability
conductivity
ductile
conductivity
What is the difference between an element and a compound? Please respond in 1–2 complete sentences using your best grammar.
Your Answer:
The difference between an element and a compound is that an element cannot be broken down into another substance. While a compound is two elements combined chemically.
What is the purpose of the periodic table? Please respond in 1–2 complete sentences using your best grammar.
Your Answer:
The purpose of the periodic table is to arrange elements in columns based on their properties and qualities.
What Group in pink
Group 1 is the alkali metals.
What Group in Yellow
Group 2 is the alkaline earth metals.
What Group in brown
Groups 3 through 12 contain transition elements.
What Group in orange and green
These metals used to be known as Rare Earth Metals. They are also the ones that don’t fit in the Periodic table.
What Group in light blue
There are seven elements that are classified as “other metals.” Like the transition metals, they are ductile and malleable, but they are different and do not fall into any category.
