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When chemical change takes place the total number of atoms changes?
No, the total number of atoms remains constant in a chemical reaction. According to the law of conservation of mass, atoms are neither created nor destroyed during a chemical change. They are simply rearranged to form new substances.
What is always true of chemical reactions?
Chemical reactions involve the breaking and forming of chemical bonds, resulting in the rearrangement of atoms to form new substances. The total mass of the substances before a chemical reaction is equal to the total mass of the substances after the reaction, as dictated by the law of conservation of mass.
A union of substances into a new molecular structure is called?
The union of substances into a new molecular structure is called a chemical reaction. In a chemical reaction, chemical bonds are broken and new bonds are formed, resulting in a different molecular arrangement from the original substances.
Are the atoms conserved during a chemical change even though new molecules are made?
Yes, atoms are conserved during a chemical change; they are neither created nor destroyed. Instead, the atoms rearrange to form new molecules. This principle is known as the law of conservation of mass, which states that the total mass of reactants equals the total mass of products in a chemical reaction. Thus, while new substances are formed, the total number of atoms remains unchanged.
Which scientist showed that the total mass of the substances in a chemical reaction is always the same before and after the chemical reaction?
Antoine Lavoisier, a French chemist, is credited with demonstrating that the total mass of substances in a chemical reaction remains constant. This fundamental principle is known as the law of conservation of mass and is a cornerstone of modern chemistry.
Do the total volumes of original and new substances stay the same after a chemical change?
It depends on the reaction. Often the volumes do change. For example, a gas could be formed when a liquid and a solid react.
What happens to mass when substances go through a chemical change?
The total mass of products is unchanged from the total mass of the reactants, but the masses of particular substances among the reactants or products change.
What happens to the particles of matter during a chemical change?
During a chemical change, the particles of matter rearrange to form new substances with different chemical properties. Bonds between atoms break and reform, resulting in the creation of products that are different from the original reactants. The total number of atoms remains the same, as a chemical change does not create or destroy atoms.
Which observation does not indicate that a chemical reaction has occured?
A change in state, such as boiling or melting, does not always indicate a chemical reaction has occurred. It could be a physical change.
When substances go through a chemical change what happens to the mass'?
In a chemical change, the total mass of the substances involved before and after the reaction remains the same. This is known as the law of conservation of mass. This means that no atoms are created or destroyed during a chemical reaction.
What type of change occurs when a new substance is formed that has different properties from the original substance?
A chemical change occurs when a new substance is formed with different properties from the original substance. This change involves the rearrangement of atoms and the formation of new chemical bonds. It is typically irreversible.
Which of the following is true of the new substances formed in a chemical reaction?
Their total mass (or total weight measured on earth) is equivalent to the total mass (or weight measured on earth) of the products used to create the reaction. Also, the Chemical Elements forming both sides are the same in both the products and the reactants, but they may be arranged differently.
Compare the total amount of energy before and after physical and chemical changes?
In physical changes, the total amount of energy before and after remains the same as no new substances are formed. In chemical changes, there may be a difference in the total amount of energy before and after the reaction due to the formation of new substances and the breaking or forming of chemical bonds.
When chemical change takes place the total number of atoms changes?
No, the total number of atoms remains constant in a chemical reaction. According to the law of conservation of mass, atoms are neither created nor destroyed during a chemical change. They are simply rearranged to form new substances.
How Does the total amount of matter in a substance increase decrease or stay the same after a chemical or physical change?
The total amount of matter in a substance remains the same after both chemical and physical changes. This is known as the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction or physical change, only rearranged. So, the total mass of the substances before and after the change will be equal.
What is always true of chemical reactions?
Chemical reactions involve the breaking and forming of chemical bonds, resulting in the rearrangement of atoms to form new substances. The total mass of the substances before a chemical reaction is equal to the total mass of the substances after the reaction, as dictated by the law of conservation of mass.
A union of substances into a new molecular structure is called?
The union of substances into a new molecular structure is called a chemical reaction. In a chemical reaction, chemical bonds are broken and new bonds are formed, resulting in a different molecular arrangement from the original substances.
