What determines the order of elements on today's periodic table?

• increasing atomic mass

• decreasing atomic mass

• increasing atomic number

• decreasing atomic number

Tags

NGSS.HS-PS1-2

From this element key of Nitrogen, determine the atomic mass of nitrogen

• 7

• 7.01

• 14.01

• 21.01

Tags

NGSS.MS-PS1-1

Look at the periodic table. Which list of elements forms a group on the periodic table?

• Li, Be, B, C, N, O, F, and Ne

• He, Ne, Ar, Kr, Xe, and Rn

• B, Si, As, Te, and At

• Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Ni, and Zd

Which is NOT a property of metals?

• brittleness

• conductivity

• ductility

• luster

What are two properties that make a metal a good choice to use as wire in electronics?

• conductivity, malleability

• ductility, conductivity

• luster, malleability

• malleability, high density

Where are most metals on the periodic table?

• on the left side only

• on the right side only

• in the middle only

• on the left side and in the middle

Using the periodic table, which element is a metalloid?

• carbon

• silicon

• oxygen

• aluminum

Iodine is a nonmetal. What is one property of iodine?

• conductivity

• dull appearance

• malleability

• ductility

The table above lists some information about certain elements in group 17. Which statement describes what happens to these elements as atomic number increases?

• Both melting point and boiling point decrease.

• Melting point increases and boiling point decreases.

• Melting point decreases and boiling point increases.

• Both melting point and boiling point increase.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is one similarity among elements in a group?

• atomic mass

• atomic weight

• chemical properties

• practical uses

Tags

NGSS.HS-PS1-1