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What do two or more substances form when they come together without forming a new substance?
When two or more substances come together without forming a new substance, they can create a mixture. Mixtures are combinations of substances that retain their individual properties and can be separated through physical means. Examples of mixtures include saltwater and air.
Does Mixture may consist of elements and compounds?
Yes, a mixture may consist of elements and compounds. A mixture is formed when two or more substances are physically combined without forming a new substance, so it can contain elements and compounds in various proportions.
If a substance explodes when it reacts with water is it a chemical or physical change?
It is a chemical change because the reaction involves the breaking and forming of chemical bonds in order to create new substances. Physical changes typically involve changes in state or appearance without altering the chemical composition of the substances involved.
Is every solution a mixture?
No, not every solution is a mixture. A solution is a homogeneous mixture of two or more substances, but it is possible for a substance to dissolve in a solvent without forming a mixture, such as in the case of a solute dissolving in a solvent to form a true solution.
What is physical chage?
A physical change refers to a change in the appearance or state of a substance without altering its chemical composition. Common examples include changes in shape, size, or state of matter (solid, liquid, gas) without forming new substances. Physical changes are often reversible.
What do two or more substances form when they are brought together without forming a new substance?
Two substances that are brought together, but not chemically combined to create a new substance, form a mixture.
What do two or more substances form when they come together without forming a new substance?
When two or more substances come together without forming a new substance, they can create a mixture. Mixtures are combinations of substances that retain their individual properties and can be separated through physical means. Examples of mixtures include saltwater and air.
Is it true that if a physical change that occurs when a substance changes composition by forming one or more new substances?
No, that statement is incorrect. A physical change does not involve changing the composition of a substance or forming new substances. It only alters the physical state or appearance of a substance without changing its chemical composition. When a substance changes composition and forms new substances, it is considered a chemical change.
Is a compound a substance or a mixture?
A compound is a substance composed of two or more elements chemically bonded together in a fixed ratio. This is in contrast to a mixture, which is a combination of two or more substances that are simply physically mixed together without forming new chemical bonds.
What are the differences between solutions and mixtures?
A *solution* is a mixture of substances that are blended so completely that the mixture looks the same everywhere while a *mixture* is a physical combination of two or more substances that are blended together without forming new substances.
Zinc chloride is a pure substance and not a mixture?
Zinc chloride is a pure substance because it is composed of only one type of molecule, specifically zinc and chlorine atoms bonded together in a fixed ratio. It is not a mixture, which consists of two or more pure substances physically combined without forming new chemical bonds.
When atoms combine is it a physical change or a chemical change?
When atoms combine to form molecules, it is a chemical change. In a chemical change, new substances are formed with different properties from the original substances. This is in contrast to physical changes, where the state or appearance of a substance may change without forming new substances.
Does Mixture may consist of elements and compounds?
Yes, a mixture may consist of elements and compounds. A mixture is formed when two or more substances are physically combined without forming a new substance, so it can contain elements and compounds in various proportions.
What is the difference between physically blending and chemically combining substances?
Physically blending substances involves mixing them together without changing their chemical composition. In contrast, chemically combining substances involves a chemical reaction that forms new substances with different properties.
What substances combine without a chemical reaction?
Substances like oil and water can mix without undergoing a chemical reaction, forming a mixture. Similarly, sugar and water can dissolve into each other without a chemical reaction occurring. These are physical changes where the substances retain their original properties.
If a substance explodes when it reacts with water is it a chemical or physical change?
It is a chemical change because the reaction involves the breaking and forming of chemical bonds in order to create new substances. Physical changes typically involve changes in state or appearance without altering the chemical composition of the substances involved.
Is every solution a mixture?
No, not every solution is a mixture. A solution is a homogeneous mixture of two or more substances, but it is possible for a substance to dissolve in a solvent without forming a mixture, such as in the case of a solute dissolving in a solvent to form a true solution.
