AP Chemistry Unit 1: IYKYK

Unit 1: When an electron is in a higher energy level, it is farther away from the nucleus and has less Coulombic attraction to the nucleus and is therefore easier to remove

• True

• False

Tags

LT 1.3 Atomic Structure Electron Configuration PES

Unit 1: When reading a PES graph, the higher the peak, the less electrons there are in that sublevel, and a larger binding energy means that the electrons are closer to the nucleus.

• True

• False

Tags

LT 1.3 Atomic Structure Electron Configuration PES

Unit 1: Isotopes of an element have the same number of protons, but different numbers of electrons.

• True

• False

Tags

LT 1.1 Moles and Molar Mass with Mass Spectra

Unit 1: Cations (+) are smaller than their atoms since you are removing valence electrons that are farther from the nucleus and anions (−) are larger than their atoms since adding extra electrons increases electron-electron repulsions.

• True

• False

Tags

LT 1.4 Trends VE- and Ionic Compounds

Unit 1: The greater the electronegativity difference between 2 atoms, the more polar the bond becomes.

• True

• False

Tags

LT 1.3 Atomic Structure Electron Configuration PES

Unit 1: % error= (experimental - theoretical)/experimental

• True

• False

Tags

AP General Ideas

Unit 1: Filtering separates mixtures based on differences in what property?

• Chemical

• Solubility

• Particle size

• Density

Tags

AP General Ideas

Unit 1: What is the equation for calculating the density of a substance?

• D=m/v

• m=D/v

• D=v*m

• D=v/m

Tags

AP General Ideas

Unit 1: When an electron is in a lower energy level, it is ________________ away from the nucleus

• Closer

• Farther

Tags

LT 1.3 Atomic Structure Electron Configuration PES

Unit 1: When reading a PES (Photoelectric Spectroscopy) graph, what does the height of a peak represent?

• The number of electrons

• The number of protons

• The mass or the isotope

• The amount of energy the electron has

Tags

LT 1.3 Atomic Structure Electron Configuration PES