Chapter 1
Chapter 2
Chapter 3
Calculations questions
100
Chemistry is the ?
What is the the study of matter ?
100
What two numbers are used to identify a specific element in the periodic table?
What are the atomic number and mass number?
100
What is an ion?
What is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge?
100
If an object has a mass of 50 grams and a volume of 10 mL, what is its density
What is 5 grams per milliliter (g/mL)
200
Air is ?
What is a Homogeneous Mixture?
200
Isotopes of an element have the same number of protons but a different number of what other subatomic particle?
What are neutrons?
200
A Cation on is.
What is a positive metal ion.
200
If 1 inch equals 2.54 centimeters, how many centimeters are in 12 inches
What is 30.48 centimeters?
300
NaCl is a classification of what matter ?
What is a Pure substance/ Compound?
300
In which group of the periodic table can you find the noble gases?
What is Group 18 (VIII A or 8)?
300
An anion is
What is a negatively charged atom.
300
Draw the orbital diagram for the element oxygen (O), which has 8 electrons
400
When a substance undergoes a chemical change, what type of change occurs in its chemical composition?
What is a chemical change?
400
what's the E-config 
1s22s22p6
400
Name NaCl
What is Sodium Chloride
400
An element has two naturally occurring isotopes: X-23 with a mass of 22.9898 amu and X-24 with a mass of 23.9850 amu. The abundance of X-23 is 30.0%, and the abundance of X-24 is 70.0%. Calculate the average atomic mass of this element.
Average Atomic Mass = (22.9898 amu × 0.30) + (23.9850 amu × 0.70)
Average Atomic Mass = (6.89694 amu) + (16.78950 amu)
Average Atomic Mass = 23.68644 amu
500
How many significant figures are in the number 0.00420?
What are 3 significant figures?
500
Write the electron configuration for the element nitrogen (N), which has an atomic number of 7.
What is 1s^2 2s^2 2p^3?
500
Binary name
dihydrogen monoxide
500
An element has two naturally occurring isotopes, A-25 with a mass of 24.9858 amu and A-26 with a mass of 25.9826 amu. The abundance of A-25 is 20.0%, and the abundance of A-26 is 80.0%. Calculate the average atomic mass of this element.
Average Atomic Mass = (24.9858 amu × 0.20) + (25.9826 amu × 0.80)
Average Atomic Mass = (4.99716 amu) + (20.78608 amu)
Average Atomic Mass = 25.78324 amu