Mechanical Properties and Reactivity

Destructive testing was used to test the paper clips. Two examples of tests of this type are.....

• an x-ray

• a tensile test

• a flammability test

• an MRI

The process by which an atom becomes a positively charged ion by losing one or more electrons is called _____________.

• Oxidation

• Reduction

• Dissociation

• Sublimation

Tags

NGSS.HS-PS1-2

The process by which a positive ion becomes an atom by gaining one or more electrons is called _____________.

• Oxidation

• Reduction

• Dissociation

• Sublimation

Tags

NGSS.HS-PS1-2

In the first part of the steel wool lab; the steel wool was ____________.

• placed in a copper sulfate solution

• heated

Tags

NGSS.MS-PS1-2

In the second part of the steel wool lab; the steel wool was ____________.

• placed in a copper sulfate solution

• heated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Of the two elements in the steel wool lab iron and copper, __________ is more reactive.

Tags

NGSS.MS-PS1-2

In the steel wool lab, when the steel wool was heated the steel wool should have ___________ in mass because iron reacted with oxygen to form iron oxide.

• increased

• decreased.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the copper reduction lab, when the copper metal was reacted with the nonmetal oxygen, they combined to form an ________ compound

• covalent

• ionic

• metal

• nonmetal

Tags

NGSS.MS-PS1-1

You used zinc to change copper ions to atoms. Which is more reactive copper or zinc? ___________.

Tags

NGSS.MS-PS1-2

The three types of point defects in crystals include

• dislocations, interfacial defects, and imperfections.

• grain boundaries, thermal defects and black holes.

• dislocations, vacancies and overloading.

• interstitial impurities, substitutional impurities, and vacancies.