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What is the difference between physical and chemical change give examples?
CHEMICAL CHANGE: Such change is a permanent change and substances go through such changes not only alter their outer shape but also change their composition. For example: conversion of milk into yoghurt is a chemical change PHYSICAL CHANGE: Such change is a temporary change and substances go through such changes alter their shape and volume only but composition remains same. For example: water changes into ice and ice melt to water is a physical change.
Is formation of water when hydrogen burns a chemical change or a chemical property?
It's a chemical change. Any time you have a change in the chemical formula of a substance, you have a chemical change. The chemical formula of hydrogen is H[2], and the chemical formula of oxygen is O[2]. The chemical formula of water is H[2]O. 2 H[2] + O[2] --> 2 H[2]O. If you were watching this happen in a lab, you'd watch two colorless gases react to form a single colorless liquid. A change in state (solid, liquid, or gas) that cannot be due to heating or cooling is nearly always a sign of a chemical change.
How do we know a chemical change has happened?
You can tell if something is a chemical changes or a physical change. Examples: Question 1) Ice melting. Answer 1) Physical change because nothing has changed just the shape of the ice. Reversing ice is easy. Question 2) Wick on a candle changes colour from white to black. Answer 2) Chemical change because it changes from clack to white and will be hard to reverse. So if it is a chemical change taking place it hard to convert back or reverse. You can also tell by the change of colour.
What are 2 examples of a physical change?
Melting ice into water and breaking a glass bottle are examples of physical changes. These changes do not alter the chemical composition of the substances involved, only their physical state or appearance.
FeSO4 NaOH chemical or physical change?
it is a chemical change because there is two new solutions created and they cannot be transformed back, making it a chemical change.
What are 2 examples of 2 chemical properties?
What are 2 examples of a Chemical Properties
What is meant by the term chemical change Give 2 examples?
A chemical change is a change that imply the change of the nature of molecules. Examples: neutralization of an acidic solution, thermal decomposition and generally all chemical reactions.
Examples chemical change?
1.burning a piece of paper 2.water evaporation 3.milk goes sour 4.match is lit 5.rusting of screws
What is the difference between physical and chemical change give examples?
CHEMICAL CHANGE: Such change is a permanent change and substances go through such changes not only alter their outer shape but also change their composition. For example: conversion of milk into yoghurt is a chemical change PHYSICAL CHANGE: Such change is a temporary change and substances go through such changes alter their shape and volume only but composition remains same. For example: water changes into ice and ice melt to water is a physical change.
What are 2 Examples Of Chemical Rocks?
Gypsum & Halite
Give two examples of chemical changes?
1. Burning of paper 2. Vulcanizing of paper
Examples of chemical change 4 examples please?
1.burning of wood 2.burning of magnesium in air 3.making curd from milk 4.heating sugar how come is these are 4 example
What are 2 examples of chemical symbols?
H (hydrogen) HE (helium)
What has to happen for a chemical change to happen?
At least 2 of the reactants must change their chemical formula.
Is formation of water when hydrogen burns a chemical change or a chemical property?
It's a chemical change. Any time you have a change in the chemical formula of a substance, you have a chemical change. The chemical formula of hydrogen is H[2], and the chemical formula of oxygen is O[2]. The chemical formula of water is H[2]O. 2 H[2] + O[2] --> 2 H[2]O. If you were watching this happen in a lab, you'd watch two colorless gases react to form a single colorless liquid. A change in state (solid, liquid, or gas) that cannot be due to heating or cooling is nearly always a sign of a chemical change.
What are 2 examples of stored chemical energy?
A battery and a glow stick.
Is Digesting an apple a physical or chemical change?
1. First step: a physical change 2. Second step: a chemical change
