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What are products reactants and catalysts?
* Reactants: the initial compounds in a chemical reaction. * Products: the final compounds in a chemical reaction. * Catalyst: a chemical compound which help the chemical reaction but not react with the other compounds.
Why did Dalton say that a chemical reaction is a rearrangement of atoms?
Dalton proposed that a chemical reaction is a rearrangement of atoms because he believed that in chemical reactions, atoms are not created or destroyed, but rather rearranged to form different compounds. This idea helped to explain how different elements combine to form new substances without changing the total number of atoms present.
What are spector ions?
Spectator ions are ions that do not participate in a chemical reaction and remain unchanged before and after the reaction. They are often found in solution as part of ionic compounds and may be written explicitly in chemical equations to represent their presence without being involved in the actual reaction.
What chemical and physical properties do compounds have?
Chemical properties of compounds refer to how they interact with other substances in chemical reactions, such as their reactivity, ability to form bonds, and composition of elements. Physical properties include characteristics such as color, density, melting point, boiling point, and solubility, which can be observed without changing the chemical identity of the substance.
What are some ways that compounds differ from mixtures?
A compound has two different elements chemically combined into a new substance that can only be separated by a chemical reaction. A mixture has two different substances mixed together that can be separated by physical means such as distillation or filtration.
Two or more elements compounds or both combined without a chemical reaction?
A Mixture.
What are two or more elements that have combined without a chemical reaction?
dinosaurs
What are products reactants and catalysts?
* Reactants: the initial compounds in a chemical reaction. * Products: the final compounds in a chemical reaction. * Catalyst: a chemical compound which help the chemical reaction but not react with the other compounds.
When a chemical symbols and formulas are used as a shortcut to describe a chemical reaction is?
Chemical symbols and formulas are used in chemical reactions as a shortcut to represent the elements and compounds involved. They provide a concise way to convey the reactants, products, and stoichiometry of a reaction without having to write out the full names of the substances. This shorthand notation helps chemists communicate and understand reactions more efficiently.
What is a catalyst element?
A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. Catalysts work by providing an alternative pathway with lower activation energy for the reaction to occur. They can be elements, compounds, or enzymes that facilitate reactions without being permanently altered themselves.
What is a substance that is an element or a compound not a mixture?
A mixture is an association of elements and compounds but without chemical bonding. Compugs contain chemical elements chemically bonded. An element contain the same type of atoms, including isotopes.
Why did Dalton say that a chemical reaction is a rearrangement of atoms?
Dalton proposed that a chemical reaction is a rearrangement of atoms because he believed that in chemical reactions, atoms are not created or destroyed, but rather rearranged to form different compounds. This idea helped to explain how different elements combine to form new substances without changing the total number of atoms present.
What are Two or more elements or compounds mixed together not bonded?
A mixture is when two or more elements or compounds are physically combined without forming any chemical bonds. In a mixture, the components maintain their individual properties and can be separated through physical means, such as filtration or evaporation.
What is the similar and difference of elements and compound?
DIFFERENCES• Compounds have two or more different types of atoms.• Elements are pure substances that have the exact same type of atom.SIMILARITIES• They are both pure substances.
What is chemical change when dissolving?
1. Dissolving with reaction - an example is dissolving in an acid - involve a chemical change because new compounds are formed. 2. Dissolving without a reaction - for example dissolution of table salt in water - is not a chemical change; only dissociation can occur.
How do you separate mixtures and compounds?
You can break down a mixture by physical means
What are spector ions?
Spectator ions are ions that do not participate in a chemical reaction and remain unchanged before and after the reaction. They are often found in solution as part of ionic compounds and may be written explicitly in chemical equations to represent their presence without being involved in the actual reaction.
