Unit 1
Which of the rules is the first and most encompassing one on the syllabus?
Be respectful
What kind of change alters some properties of a substance, but not the identity/composition of the substance?
Physical change
How are frequency and energy related
Directly proportional
How are the elements currently put in order on the periodic table?
Increasing atomic number
How many unpaired electrons are in the electron dot structure of fluorine?
1
On average, a baseball team wins 2 of every 3 games it plays. How many games would the team win in a 162-game season?
108
Identify the reactants in the following reaction:
Li + MgCl2 -> Mg +LiCl
Li & MgCl2
Which energy sublevel has orbitals with complex shapes?
F
When gold loses one electron, what charge does it form?
1+
What do network solids lack that are present in other molecular solids?
Metalic Bonds
Creating polymers and alloys for use in artificial joints is an application of chemistry to which field?
Medicine
In which change od state does a gas change to a liquid?
Condensation
Which model of the atom was the first to include energy levels?
Bohr Model
What is largely responsible for atomic radius increasing to the left across a period?
Nuclear Charge
Molybdenum has a body-centered cubic arrangement of its atoms. What is its coordination number?
8
What is 3.12x10^6 in standard notification
3120000
During any chemical change, the mass of the products is...
Always equal to the mass of the reactants
Which type of electromagnetic radiation has a frequency of 4.87x10^16 Hz
Ultraviolet
How would terbium be classified?
Inner transition metal
How many sigma & pi bonds are in a double bond?
1 sigma 1 pi
What is the mass of 21.2 mL of gold (density = 19.3 g/mL)
409 g
How many protons are in an atom of niobium?
41 p+
What is the chemical formula of the ionic compound that results from rubidium and sulfur?
Rb2S
Who discovered the electron?
J.J. Thompson
How does IF5 break the octet rule?
More than an octet on the central atom