Admin Table of Contents
- 1 What will happen when two substances are combined?
- 2 How do you know when a chemical reaction occurs?
- 3 When two substances mix together such that they are evenly distributed?
- 4 Is two substances are mixed and light is produced a physical or chemical change?
- 5 How do you know if two chemicals will react?
- 6 When a mixture will remain evenly distributed without settling out is called?
- 7 What type of reaction occurs when two substances are mixed and light is produced?
- 8 When two substances are mixed together and light is produced?
- 9 What is a mixture in chemistry?
- 10 What is a chemical reaction?
What will happen when two substances are combined?
A mixture is created when two or more different substances are physically combined and can be separated back into its original substances. A chemical reaction occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances.
How do you know when a chemical reaction occurs?
There are five signs of a chemical change:
- Color Change.
- Production of an odor.
- Change of Temperature.
- Evolution of a gas (formation of bubbles)
- Precipitate (formation of a solid)
Does mixing involve a chemical change?
Cutting, tearing, shattering, grinding, and mixing are further types of physical changes because they change the form but not the composition of a material. For example, mixing salt and pepper creates a new substance without changing the chemical makeup of either component.
When two substances mix together such that they are evenly distributed?
When two substances mix together such that they are evenly distributed, a homogeneous mixture is formed. Let us understand what a homogeneous mixture is? A homogeneous mixture is a type of mixture in which the particles present are evenly mixed.
Is two substances are mixed and light is produced a physical or chemical change?
PHYSICAL CHANGE CHEMICAL CHANGE
| 1. | An ice cube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone. |
|---|---|
| 2. | Two chemical are mixed together and a gas is produce. |
| 3. | A bicycle changes color as it rusts. |
| 4. | A solid is crushed to a powder. |
| 5. | Two substances are mixed and light is produced. |
When two substances are mixed together a color change is observed?
Tell students that sometimes when two (or more) substances are mixed together, a change occurs and another substance (or substances) is created. This is called a chemical reaction. Gas may form, heat may be produced, and color may change. These types of changes indicate that a chemical reaction has occurred.
How do you know if two chemicals will react?
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products!
When a mixture will remain evenly distributed without settling out is called?
A colloid is a mixture that has particles ranging between 1 and 1000 nanometers in diameter, yet are still able to remain evenly distributed throughout the solution. These are also known as colloidal dispersions because the substances remain dispersed and do not settle to the bottom of the container.
When two substances that Cannot dissolve each other are mixed a mixture is formed?
When two substances that cannot dissolve each other are mixed, a mixture is formed. a heterogeneous mixture that has very small dispersed particles and stays mixed for a long time isa.
What type of reaction occurs when two substances are mixed and light is produced?
combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.
When two substances are mixed together and light is produced?
What type of reaction occurs when two solutions are mixed together?
The most common precipitation reactions occurring in aqueous solution involve the formation of an insoluble ionic compound when two solutions containing soluble compounds are mixed. Consider what happens when an aqueous solution of NaCl is added to an aqueous solution of AgNO 3.
What is a mixture in chemistry?
In chemistry, a mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions, and colloids. Answer verified by Toppr 1744 Views
What is a chemical reaction?
A chemical reaction occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances. Examples of chemical reactions are:
What is the difference between reactants and products in chemistry?
During a chemical reaction, the substances that react are known as reactants whereas the substances that are formed during a chemical reaction are known as products.