Chemistry (Measurement, Gases, Changes, Chemical Equations, Reactions, Periodic Trends)

Radius

________ increases going down a group because….

Mono

Who is only used on the second element, if only one of the first element just leave is normally? Answer with a single words or term.

Noble gases

________ dont have any electronegativity values.

Single replacement reaction

________, saw a gas form.

Electronegativity

As we go across the radii of atoms get smaller, so valence electrons get closer to the nucleus, so electrons are more attracted to the nucleus. ________ decreases down the group because….

Zeff

________= # of protons- # of shielding electronsAtomic vs Ionic Radii: Ionic radii follow the same trends as atomic radii.

hydrocarbon

Combustion: A(n) ________ reacts with oxygen to form carbon dioxide and water.

Anions

What are larger than the neutral atom? Answer with a single words or term.

Negative exponent

________- move the decimal to the left the same number of places as the exponent.

Alkali metals reactivity

Balancing: Make sure the same number of elements on both sides of the arrowPeriodic Trends: Reactivity: ________ increases going down a group because….

N2O

________= dinitrogen monoxide.

Substances composition

Chemical Changes: ________ has changed.

Energy

There are fewer protons attracting the same number of electrons so electron- electron repulsion is stronger and coulombic attraction is weaker so ionic radius is largerIonization: ________ needed to remove an electron from an atom.

Real gases

________ behave like ideal gases at high temp, high volume, and low pressure.Gas Laws: Boyles Law: Pressure- Volume Relationship.

Positive exponent

Scientific Notation: To convert scientific to standard: ________- move the decimal to the right the same number of places as the exponent.

H2SO4

________= sulfuric acid.