S Flashcards
What is the atomic mass on the Periodic Table?
The atomic mass is the average mass of all isotopes of that element.
What is an isotope?
An isotope is a form of an element that has the same number of protons but a different number of neutrons.
What is the most common isotope of hydrogen?
Hydrogen’s most common isotope has 1 proton and 0 neutrons.
What is deuterium?
Deuterium is an isotope of hydrogen with a mass of 2, having 1 proton and 1 neutron.
What is tritium?
Tritium is an isotope of hydrogen with a mass of 3, having 1 proton and 2 neutrons.
How are isotopes of the same element similar?
Isotopes of the same element have the same number of protons and electrons.
How are isotopes of the same element different?
Isotopes of the same element have different numbers of neutrons.
What are new substances created following a chemical reaction called?
Products
What are the substances present prior to a chemical reaction called?
Reactants
What does the arrow in a chemical equation represent?
Chemical reaction
What is the large number before a molecule called?
Coefficient
What does the subscript represent in a chemical equation?
Number of atoms
How many molecules of CO2 are present in the equation 6CO2 + 6H2O → C6H12O6 + 6O2?
6 molecules
How many atoms of oxygen are present in the reactants of the equation 6CO2 + 6H2O → C6H12O6 + 6O2?
18 atoms
How many atoms of carbon are present in the products of the equation 6CO2 + 6H2O → C6H12O6 + 6O2?
6 atoms
How many total atoms are present in C6H12O6?
24 atoms
Is the equation 6CO2 + 6H2O → C6H12O6 + 6O2 balanced or unbalanced?
Balanced
Is the equation CH4 + O2 → CO2 + 2H2O balanced or unbalanced?
Unbalanced
Is the equation NaBr + CaF2 → NaF + CaBr2 balanced or unbalanced?
Unbalanced
Is the equation 3F2 + 3O2 → 2F2O3 balanced or unbalanced?
Balanced
