{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter 21 Winter 2011

Chapter 21 Winter 2011 - Chapter 21 Bonding in Metals...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 21 Bonding in Metals, Alloys, and Semiconductors Quiz: Did you read Chapter 21 for today? ) es a) Yes b) No Earth The energy released in some chemical The energy released in some chemical reactions comes from reactions comes from a) a) Gravitational potential energy of the atoms Gravitational potential energy of the atoms b) b) Electrical potential energy of electrons in Electrical potential energy of electrons in atoms atoms ) uclear potential energy of neutrons and uclear potential energy of neutrons and c) c) Nuclear potential energy of neutrons and Nuclear potential energy of neutrons and protons in atoms protons in atoms d) d) Kinetic energy of electrons in atoms Kinetic energy of electrons in atoms Why do things react? Reminder: Things happen in nature for two possible reasons: the system proceeds to ________ and/or the universe proceeds to _________? a) lower entropy…lower energy b) lower energy…higher entropy c) higher energy…lower entropy d) higher energy…higher entropy Which reaction is balanced? A. C + O 2 b 2CO B. 4Na + 2O 2 b 2Na 2 O . Al + 3O Al C. 4Al + 3O 2 b 2Al 2 O 3 D. C 6 H 12 O 6 + 6O 2 b 3CO 2 + 3H 2 O E. 2K + S b 2K 2 S A catalyst (Pd) ignites hydrogen without needing a match because it A. raises the activation energy of the reaction....
View Full Document

{[ snackBarMessage ]}

Page1 / 7

Chapter 21 Winter 2011 - Chapter 21 Bonding in Metals...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online