7P113

Katrina tried to take pictures with her new digital camera but discovered that its batteries were dead. What happened to the batteries?

• Kinetic energy had been changed into potential energy.

• All their stored energy had been destroyed.

• All the energy stored in the batteries had been transformed.

• Only chemical energy remained stored in the batteries.

Tags

NGSS.MS-PS3-5

Which best explains how elements are arranged on the modern periodic table?

• Elements are arranged from fewest protons to most protons.

• Elements are arranged from most protons to fewest protons.

• Elements are arranged from fewest neutrons to most neutrons.

Which elements are most likely to react in the same manner in a chemical reaction?

• elements in the same group

• elements in the same period

• elements with similar atomic masses

Which best explains how the periodic table is used to identify properties of elements?

• by the color and shape of the elements

• by the number of electrons in the elements

• by the group in which the elements are located

Properties such as magnetism, luster, and malleability have been used to group together which category of elements on the periodic table?

• metals

• nonmetals

• metalloids

• noble gases

Tags

NGSS.MS-PS2-3

A student finds that an unknown element readily reacts with alkali metals. Which is the best conclusion about the unknown element?

• It is a noble gas.

• It is in Group 16 (VIA).

• It is in Group 17 (VIIA).

• It is an alkaline earth metal.

Tags

NGSS.MS-PS1-2

In which part of the periodic table are the most reactive nonmetals located?

• entire row at the top end of the table

• the rows at the bottom of the table that connect two sections

• the column at the far left of the table

• the second column from the right of the table

Sodium reacts with water. Which element is most likely to have a similar effect to sodium if it is exposed to water?

• coal

• oxygen

• lithium

Tags

NGSS.MS-PS1-2

Why does reactivity in non-metals most likely increase from left to right in the periodic table?

• atomic radius increases

• attraction for electrons increases

• attraction for electrons decreases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A material can be identified by its behavior when chemically combined. Which property best supports this statement?

• density

• reactivity

• specific heat

• melting point

Tags

NGSS.MS-PS1-2