11.1 Quiz Using the Periodic Table

group

A column on the periodic table

After arranging the known elements in a periodic table, Mendeleev noticed large gaps between some elements. He predicted that scientists would find elements to fit into these spaces. Mendeleev's predictions were true.

After arranging the known elements in a periodic table, Mendeleev noticed large gaps between some elements. He predicted that scientists would find ______________ to fit into these spaces. Mendeleev's predictions were _____________.

As you read from left to right across the periodic table, atomic number increases by one for each element.

As you read from left to right across the periodic table, atomic number ______________ by one for each element.

Between the metals and nonmetals on the periodic table are the metalloids, which have properties of metals and nonmetals

Between the metals and nonmetals on the periodic table are the ________________, which have properties of metals and nonmetals

Elements in the same group have similar chemical properties, which means they react with other elements in similar ways.

Elements in the same group have similar _______________________, which means they react with other elements in similar ways.

For example, Mendeleev noticed patterns in the melting point of elements, the temperature at which a solid changes to a liquid.

For example, Mendeleev noticed patterns in the ____________ of elements, the temperature at which a solid changes to a liquid.

periods

Horizontal rows on the periodic table

In the early 1900s, Henry Moseley found that the problem with Mendeleev's table could be solved if the elements were arranged in rows by atomic number

In the early 1900s, Henry Moseley found that the problem with Mendeleev's table could be solved if the elements were arranged in rows by _________________________.

Most nonmetals are on the right side of the periodic table; these elements do not conduct thermal energy and electricity

Most nonmetals are on the __________ side of the periodic table; these elements do not conduct thermal energy and electricity

Most of the elements in the periodic table are metals, which are shiny and conduct thermal energy and electricity

Most of the elements in the periodic table are __________, which are shiny and conduct thermal energy and electricity

Scientists use the periodic table to predict the properties of the new elements they create

Scientists use the periodic table to predict the _______________ of the new elements they create

periodic table

a chart of the elements arranged into rows and columns according to their chemical and physical properties

Dimitri Mendeleev

created the periodic table in the mid-1800s to help classify the elements by their properties; He placed the elements in rows of increasing atomic mass

periodic table (used to what?)

determine how all elements are related to one another

elements that are nearby each other on the periodic table share similar properties

elements that are _____________ each other on the periodic table share similar properties

periodic

repeating pattern

element key

shows the element's name, atomic number, chemical symbol, state of matter, and atomic mass

atomic number

the number of protons in the nucleus of an atom

you can identify the properties of an element by studying its placement on the periodic table.

you can identify the properties of an element by studying its _______________ on the periodic table.