Trendy Conductors and Insulators
What is lithium?
H2O
What is a compound?
State the reactant in the reaction below.
CO2 + H2O --> H2CO3
Draw a Lewis Dot Structure for a molecule of CO2. State the kind of bond holding the atoms together. Be as specific as possible.
O=C=O with 4 dots on each O. Double, polar covalent bond
List the 3 elements that must interact with hydrogen in order for hydrogen bonding to be present in the molecule.
F, O, N
Graphite, or pencil lead, can easily conduct electricity. What claim can you make about the structure of graphite, in terms of the electrons?
Graphite has freely moving electrons in its structure.
Sand in water
What is a heterogenous mixture
True or False: The same types of atoms are conserved in all chemical reactions.
What is true?
Draw a Lewis Dot Diagram for a molecule of O2. State the kind of bond that holds the atoms together. Be as specific as possible.
O=O with 4 dots on each O. Double, nonpolar covalent bond.
What is the relationship between the strength of an intermolecular force and vapor pressure?
The stronger the intermolecular force, the lower the vapor pressure
The element in group 2 with the largest atomic radius
What is Radium (Ra)?
Salt water
what is a homogeneous mixture
Complete the reaction below with the appropriate atoms.
HCl + NaOH --> H2O + _____
What is NaCl?
True or false: 6 electrons are shared in a triple covalent bond
What is true
NH3 is a polar/nonpolar molecule that is held together by ________ forces
polar, hydrogen bonding
The reason why potassium (K) reacts more vigorously with water than sodium (Na) is due to this.
K has a lower ionization energy than Na, so the outermost electron (valence electron) is more easily removed than the outermost electron (valence electron) on Na.
U
What is an element?
State the products of the chemical reaction below.
HNO3 + KOH --> H2O + KNO3
What is H2O and KNO3?
Draw a Lewis Structure of CCl4. State the kind of bonds that holds the atoms together. Be as specific as possible.
Carbon with 4 Cl around, each Cl has 6 pairs of electrons. Single, polar covalent bond.
HF has a high boiling point, which can be attributed to what particle-level reasoning?
Strong hydrogen-bond interactions between H-F particles.
The element on the periodic table with the highest electronegativity
UF6
NH3 reacts with HCl to form NH4Cl. Write a chemical reaction based on this statement.
NH3 + HCl --> NH4Cl
In a nonpolar covalent bond, electrons are shared in this manner.
What is evenly?
Choose the right words to complete the sentence:
CH4 has a higher/lower boiling point that H2O because it has a higher/lower vapor pressure due to the stronger/weaker intermolecular forces.
lower, higher, weaker