Ai Flash Cards On Briscos Notes
What is the basic unit of matter composed of protons, neutrons, and electrons?
Atomic structure
Protons and neutrons are found in the nucleus, while electrons orbit around it.
What is the charge and position of protons and neutrons in an atom?
Protons: positive charge, nucleus; Neutrons: no charge, nucleus
Electrons have a negative charge and are located outside the nucleus.
What is the significance of atomic number?
It indicates the number of protons in an atom
For example, the atomic number of Lithium (Li) is 3.
What does atomic mass represent?
The total number of protons and neutrons in an atom
It is often denoted by the letter A.
What are isotopes?
Atoms of the same element with different numbers of neutrons
Example: 1^3Li has 3 nucleons (1 proton and 2 neutrons).
What is a physical change?
A change of state or shape without forming a new substance
Examples include melting, freezing, or dissolving.
What is a chemical change?
A process that results in the formation of a new substance
Indicators include color change, heat production, gas formation, or precipitate formation.
What is the Law of Conservation of Mass?
Mass is neither created nor destroyed in a chemical reaction
The total mass of reactants equals the total mass of products.
What is the general format of a chemical reaction?
Reactants → Products
This shows the transformation of substances during a reaction.
What type of reaction is represented by A + B → AB?
Combination (synthesis) reaction
Two or more reactants combine to form a single product.
What type of reaction is represented by AB → A + B?
Decomposition reaction
A single compound breaks down into two or more simpler products.
What does the reaction A + BC → AC + B represent?
Single displacement reaction
An element displaces another element in a compound.
What does the reaction AB + CD → AD + CB represent?
Double displacement reaction
The ions in two compounds exchange places.
What is a combustion reaction?
A reaction where a substance combines with oxygen, producing heat and light
Example: C4 + O2 → CO2 + H2O.
What is the function of a fire blanket?
To extinguish small fires
It is used for paper, wood, textiles, oil, liquid, and electrical fires.
