Chapter 1-2
Observation, hypothesis or experiment?
More sugar dissolves in hot water than cold water.
What is hypothesis?
Celsius equivalent to 134 degrees F.
What is 56.7 degrees F?
Atomic emission spectra are due to electrons doing this.
What is dropping from one energy level to a lower one?
Definition of the octet rule.
What is Atoms lose, gain or share valence electrons to have 8 valence electrons?
The quantity of moles of iron present in 3.15 x 1024 atoms of iron.
What is 5.23 moles?
The measurement 0.005 in written in scientific notation.
What is 5 x 10-3
How many kilocalories are in 42 g of carbohydrate?
What is 168 kilocalories?
At maximum, an f sublevel can hold ___ electrons, a d sublevel can hold ____ electrons and a p sublevel can hold ____ electrons.
What are 14, 10, 6?
Sulfide ions should have a charge of this.
What is 2-?
The number of atoms present in the formula (NH4)2Cr2O7.
What is 19?
The number of significant figures in 0.0038 m.
What is 2?
This is an element that has similar properties to magnesium.
What is Be, Ca, Sr, Ba or Ra?
The element with the largest atom in period 2.
What is lithium?
A group of covalently bonded atoms that has an overall electrical charge is called
What is polyatomic ion?
The molar mass of C3H8O2.
What is 76.1 g/mol?
The number 8807 rounded to 3 significant figures.
What is 8810?
The number of neutrons in an element is calculated by using this formula.
What is Mass number - atomic number?
This is the electron configuration for potassium.
What is 1s22s22p63s23p64s1?
The correct formula for a compound formed from the elements Al and O.
Al2O3
The mass of 1.000 mol of Ar.
What is 39.95 g?
1.6 m converted to inches
What is 63 in?
The correct symbol for the isotope of potassium with 22 neutrons.
What is
41
K
19
Draw on the board the orbital diagram for Sc.
Ch 5 test number 24
The correct name for N2O3
What is dinitrogen trioxide?
The molecular formula for a compound with an empirical formula of CH2O and a molar mass of 120g/mol.
What is C4H8O4?