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Stricter of matter
What is Matter?
Anything that occupies space and has mass.
What is an Atom?
The smallest particle of an element that retains its properties.
Define an Element.
A substance made up of atoms of only one kind.
What is a Compound?
A substance formed by chemical combination of atoms of two or more elements in fixed proportions.
What is Atomicity?
The total number of atoms present in a molecule of an element.
What is Valency?
The combining capacity of an element, determined by the number of valence electrons.
Difference between Atom and Molecule.
Atoms are the smallest particles of matter, while molecules are combinations of two or more atoms.
What is a Chemical Symbol?
A letter or pair of letters used to represent a chemical element.
What is a Chemical Formula?
The symbolic representation of the composition of a molecule.
What defines a Mixture?
A physical combination of two or more substances where no chemical change occurs.
What are Valence Electrons?
Electrons in the outermost shell of an atom that determine its reactivity.
What is the difference between a Compound and a Mixture?
Compounds are formed by chemical bonds, while mixtures involve physical combinations.
What is the Law of Conservation of Mass?
Matter can neither be created nor destroyed; mass of reactants equals mass of products.
What are Diatomic molecules?
Molecules composed of two atoms, such as H2 or O2.
What is the ratio of constituents in a Compound?
Constituents are present in a fixed ratio.
How are compounds typically broken down?
Compounds can be broken down into constituents by chemical methods.
Examples of Compounds.
Water (H2O), iron sulfide (FeS), and carbon dioxide (CO2).
What is a Reactant in a chemical equation?
Substances taking part in a chemical reaction.
What is a Product in a chemical equation?
New substances formed after a chemical reaction.
What does a Balanced Chemical Equation represent?
The number of atoms of each element is the same on both sides of the equation.
