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What else can I help you with?
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
What sentence has the word chemical reaction?
A chemical change is a resultant change of a combination of a couple different substances that become a new substance. A sentence with this is: "Its particles changed due to it undergoing a chemical change."
3 things you could see if a chemical reaction occurs?
Things to check whether a chem. reaction is occurring or not:-Evolution of gasChange in temperatureFormation of precipitateChange in colour of solution or substance
What Three Things can happen when a Chemical Reaction occur?
A chemical reaction can change a substance into a solid, liquid, or gas. It may cause a substance to explode or could cause no change at all.
What are sings of a chemical reaction?
Chemical reactions can be recognized by many things, but mainly include a change in color, a variation in temperature, change in shape, or the creation of bubbles.
You place an ice cube on the sink and it begins to melt . is this a chemical reaction?
This is a physical change. Chemical changes are changes in "what things are made out of".
When firework explodes is physical change or chemical change?
When a firework explodes, it is a chemical change because new substances are formed during the reaction. The compounds inside the firework undergo a rapid chemical reaction when ignited, resulting in the release of light, heat, gas, and sound, which are all evidence of a chemical reaction taking place.
Why are reactants important in a chemical reaction?
Reactants are added into the equation to form the chemical reaction. Reactants are substances that are changed into products. Without these reactants, there would be no formula, resulting in no product.
Is dissolving sugar a physical reaction?
no, technically there is no such thing as a physical reaction. It is, however, a physical change. when two things react, it is chemical so you cannot have a "Physical" reaction in chemistry
How do you know when a chemical reaction occurs?
Many different things show that a chemical reaction is happening. the main one is CHANGE IS OCCURING. change of colour, change of amounts, etc. Also, heat is being consumed/given off. light is given off. Gasses are prodiced. etc etc. some chemical reactions are easily seen i.e. mushroom cloud in the sky, water boils when added to h2so4. other chemical reactions are only realized when a different product emerges from the combining of different elements
Is picking up iron filings with a magnet a chemical reaction?
No, a chemical reaction is when the atoms are not mixed together but chemical bonded together. You know when a chemical reaction has happened when you can smell, hear or see things reacting.
What are four things that indicate that a chemical change may have taken place?
Change in color: If the substance changes color during a reaction, it may indicate a chemical change. Formation of gas: Production of gas bubbles, fizzing, or bubbling is a sign of a chemical change. Temperature change: Significant heat or cooling effects can indicate a chemical reaction is occurring. Formation of a precipitate: When a solid substance forms in a solution, it suggests a chemical change has taken place.
