Unit 3
How many ways are there to measure matter?
Five ways, mass,volume,Weight,Density,Counting Particles (Moles)
what is a chemical calculation
Chemical calculations involve using mathematical methods to quantify and predict the amounts of substances involved in chemical reactions and processes. These calculations are fundamental in chemistry for understanding the relationships between reactants, products, and their proportions based on the principles of stoichiometry and other concepts.
Speed, collision, concentration, temperature, catalyst.
rates of reaction
What are Hydrocarbons
Hydrocarbons are organic compounds made up entirely of carbon and hydrogen atoms.
A compound contains 40% sulfur and 60% oxygen by mass. What is the empirical formula?
This means the simplest ratio of sulfur to oxygen in the compound is 1:3, making the empirical formula SO₃.
what is energy in chemical bonds
Energy in chemical bonds refers to the energy required to form or break the bonds between atoms in a molecule. Chemical bonds store potential energy, and changes in these bonds during chemical reactions involve either absorbing or releasing energy.
Whats an acid
An acid is a substance that releases hydrogen ions when dissolved in water
Radioactivity
is the process by which unstable atomic nuclei decay, releasing energy in the form of radiation.
What is Concentrations of Solutions
The concentration of a solution refers to the amount of solute (substance being dissolved) present in a given amount of solvent (substance doing the dissolving) or solution. It describes how “strong” or “weak” a solution is.
what is enthalpy in chages in state
Heat energy during state changes.
reaction of acid and bases
The reaction between an acid and a base is called neutralization. It produces a salt and water
Half-life
is the time required for half of the radioactive nuclei in a sample to decay.
How many types of chemical reactions are there
There are five primary types of chemical reactions,Synthesis,Decomposition,Single Replacement, Double Replacement and Combustion Reaction
Small-scale atoms; large-scale properties interconnected.
Micro/macro
Forward, reverse, balance, dynamic, concentration, constant, system.
Reversible Reactions and Equilibrium
Uses of Radioisotopes
Radioisotopes are used in medicine for diagnosis and treatment, in industry for quality control and tracing, and in research for studying biological and chemical processes.
What is Concentrations of Solutions
The concentration of a solution is a measure of the amount of solute (the substance being dissolved) present in a given quantity of solvent (the substance doing the dissolving) or the entire solution. It indicates how “strong” or “weak” the solution is.
Pressure, volume, temperature relations in gases.
gas laws
Salt soultion
A salt solution is a mixture of a salt (an ionic compound) dissolved in a liquid, typically water. Salts are formed from the reaction of an acid and a base (neutralization reaction).
Isotopic Notation defintion
Isotopic notation is a symbolic representation of an isotope, showing its chemical element, mass number (total protons and neutrons), and atomic number (protons).