Chapter 2
The smallest basic particles of matter are _____.
Atoms
The scale of a measuring instrument is _________, that is, accurately subdivided into measurement units.
Graduated
How many electrons does a single orbital hold?
2
Which has the least mass: a proton, neutron, or electron?
Electron
Kinetic
Malleability, conductivity, and density are all examples of (chemical/physical) properties.
Physical
This is the prefix that represents "hundredth".
Centi-
Tritium is an isotope of hydrogen that has a mass number of 3. What is its isotopic notation?
31H
The electrons in the outermost level that are important in bonding.
Valence Electrons
A reaction that absorbs energy would be (endothermic/exothermic).
Endothermic
The measurement 0.037010 m has how many significant digits?
5
8
If an atom loses an electron, it has a _____ charge and is called a ______.
The freezing point of nitrogen is -210 C. What would that temperature be in kelvins?
63 K
In converting Celsius to Kelvin, we add _____ to the measured value.
273.15
One gallon of gasoline (3785 mL) has a mass of 2540 g. What is the density of gasoline?
0.671 g/mL
This rule describes the order in which electrons fill orbitals.
Hund's Rule
If an atom gains an electron, it will have a _____ charge and be called an ______.
Negative; Anion
The prefix for thousand.
-kilo
How many atoms of oxygen are in five molecules of penicillin G(C10H20O4S)?
20
What is a nonmetric unit often used with SI prefixes?
Liter
Two different isotopes of the same element would have the same number of ______ but a different number of ______.
Protons; Neutrons
107.9 amu
Convert 41 kg to mg. Convert your answer to scientific notation.
4.1 x 107 mg