Science Exam Part 2 Flashcards
Describes the ability of metal to reflect light.
Luster
The ability to be pulled into thin wires.
Ductility
Ability of a substance to be hammered into or rolled into sheets.
Malleability
These types of metals are in group 1, they react quickly with other elements, such as oxygen. Therefor, in nature the only occur in compounds.
Alkali Metals
Is an element that is generally shiny. It is easily pulled into wires or hammered into thin sheets. It’s also a good conductor of electricity and thermal energy.
Metal
Elements in groups 3-12
Two blocks on the periodic table.
They have higher melting points, greater strength, and higher densities
React less quickly with oxygen
Transistor elements
When Medeleev placed his list of elements into a table how did he arrange them?
In rows of increasing atomic mass.
Henry Moselev changed what problem on the periodic table?
He found that if elements were listed in increasing atomic number, columns would contain elements with similar properties.
A column on the periodic table.
Group
Rows on the periodic table.
Periods
Where are metals found on the periodic table?
On the left side and in the middle
Where are no metals located on the periodic table?
The right side
What can you learn about elements from the periodic table?
The periodic table shows how elements and their properties relate to each other. So we can use these patterns of properties to predict the properties of new elements.
Sodium is in Group 1 of the periodic table. Sodium atoms readily form bonds with other atoms, which statement best explains this theory?
Sodium atoms need to give up only one valence electron.
Elements that have no metallic properties.
Nonmetals
