Periodic Table (SC.8.P.8.5 & SC.8.P.8.6)

There are more than 100 known elements.  Which of the following best describes these elements?

• Most of the elements are metals.

• Most of the elements are nonmetals.

• Most of the elements are metalloids.

• Most of the elements are noble gases.

Based on its location in the periodic table, what statement best describes the element Ca?

• It breaks easily like glass

• It is shiny and can be bent and shaped

• It does not conduct electricity

• It is definitely not a metal

The information on the periodic table is organized into boxes, which are placed in rows and stacked in columns.  Which of the following does each box represent?

• Compound

• Group

• Period

• Element

Which group on the periodic table does NOT like to form bonds with other elements?

• Alkali metals

• Transition metals

• Halogens

• Noble gases

The elements in a column of the periodic table all have …

• The same chemical symbol

• The same number of energy levels

• The same number of electrons

• The same number of valence electrons

What do elements in the same group on the periodic table have in common?

• They have similar chemical symbols

• They have similar chemical properties

• They have the same atomic number

• They have the same average atomic mass

What claim can be supported by evidence for most of the elements that lie along the zigzag line?

• They are metalloids

• They are nonmetals

• They are transition metals

• They are metals

Sodium and chlorine atoms combine in a 1:1 ration to form sodium chloride (NaCl).  Chlorine will also combine in the same ratio with any element that has similar properties to sodium.  Which of these sets of elements will also combine with chlorine (Cl) in the same ratio?

• F, Br, I, At

• H, Li, K, Rb

• O, S, Se, Te

• Mg, Al, Si, P

Two major categories of compounds in living systems are lipids and carbohydrates.  Both types of compounds are made up of carbon, hydrogen, and oxygen.  There are many different types of compounds in each category.  What can you conclude from this information?

• Most elements can be found in nature

• Elements can combine in many different ways

• Nonliving things are made up of other elements

• Living things contain only carbon, hydrogen, and oxygen

When six atoms of carbon are combined with twelve atoms of hydrogen and six atoms of oxygen, the combination is a simple sugar.  Which answer below best describes that combination of atoms?

• Element

• Solution

• Mixture

• Compound

Tags

NGSS.MS-PS1-1