It might, or it could just be vaporization of the substance (physical change).
no, its considered an invertibret
No, A formation of a gas does not mean a chemical reation
Well, one of a substance's properties is whether it's a liquid or a gas or a solid. This is a physical property. If you mean chemical property, then no, it doesn't change with a change of phase.
Helium is a pure chemical element.
Chemical- the composition of the substance Physical- appearance of substance
A chemical substance is a material with a specific chemical compound. A common example of a chemical substance is pure water; it has the same properties and the same ratioof hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, or gas, and may change between these phases of matter with changes intemperature or pressure. Chemical reactions convert one chemical substance into another. Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard.
incapacitating
A chemical substance is some form of liquid or solid (or gas!) made out of chemicals or elements.
No, A formation of a gas does not mean a chemical reation
Gas is a sate of matter, not any specific substance
Chemical. If vinegar reacts with baking soda, a new substance is produced. If something new is produced, it is chemical. In chemical reactions, things change what they are. Water splitting into hydrogen gas and oxygen is chemical, because hydrogen gas and oxygen gas is different from water.
Well, one of a substance's properties is whether it's a liquid or a gas or a solid. This is a physical property. If you mean chemical property, then no, it doesn't change with a change of phase.
Chemical. If vinegar reacts with baking soda, a new substance is produced. If something new is produced, it is chemical. In chemical reactions, things change what they are. Water splitting into hydrogen gas and oxygen is chemical, because hydrogen gas and oxygen gas is different from water.
Frequently these words are considered as synonyms.
Yes, chemical elements are substances.
Generally chemical compound and substance are considered synonyms. But also a mixture is a substance.
Helium is a pure chemical element.
It is CS or tear gas.