Intro to Chem
Chemistry is the study of this
What is Matter and the changes it undergoes
The SI Unit for mass
What is kilogram?
These are the 3 states of matter
What are solid, liquid, and gas?
This Chemist proposed the 1st atomic theory
Who is John Dalton?
When light is released, an electron travels from here in an atom
A vertical column of elements is called this
What is Group?
Calorimetry
Calculate the heat (in joules) to change 10.0 g of water(Cp = 4.184 J/gC) from 26.50C to 83.70C.
Q = mCpAT
What is 2390 J or 2.39 x 103 J?
Color, shape, texture, and odor can all be described as these types of observations.
What are qualitative?
This is defined as a measure of the quantity of matter
What is mass?
Melting Ice is an example of this kind of change.
What is physical?
Atoms of the same element with different numbers of neutrons
What are isotopes?
The statement that an electron occupies the lowest available energy level is representative of this rule or principle
What is the Aufbau Principle?
The elements that border along the staircase are this type
What are metalloids?
Which of the following substances would not be classified as a chemical - Water, sugar, salt, titanium dioxide, none of the above?
What is none of the above?
A measurement that closely agrees with the true or accepted value is described as this.
What is accurate?
The 2 types of pure substances
What are elements and compounds?
Thomson discovered these in the Cathode Ray experiment
What are negative particles or electrons?
1s22s22p3 is the electron configuration for this element
What is Nitrogen (#7)?
This scientist is credited with discovering the 1st periodic table
Who is Dmitri Mendeleev?
What is numbers or measurements?
0.02550 has this many sig figs
What is 4?
These are 4 evidences of a chemical reaction
What are color change, temperature change, gas given off and precipitate forms?
What are nucleus and protons or positive nucleus?
The rule that says orbitals of equal energy occupy 1 electron before any can have 2 electrons
What is Hund's Rule?
The modern periodic table is arranged this way
What is increasing atomic number?
These are the 5 steps to the scientific method.
What are state the problem, observe/collect data, hypothesis, experiment, and conclusion.
The is the density of kerosene if the mass of a 6.0 mL sample is 4.92 g.
What is 0.82 g/mL?
The separation technique used to recover both the salt and water from a seawater mixture
What is distillation?
Oyxgen can combine with carbon to form 2 compounds, CO and CO2. This is an example of what law?
What is Law of Multiple Proportions?
[Ar] 4s23d104p5 is the shorthand notation for this element
What is Bromine (#35)?
Going across a row (from left to right) on the periodic table, atomic radius size does this
What is decrease?