wheat. The process is known as willowing and separates the wheat from the chaff.
Gold. The process is known as panning and separates the gold from silt.
uranium. The process is known as enriching and separates the docile U238 from the nasty U235
Changes of state of matter are physical processes, the molecule remain unchanged.
A chemical change occurs because compound is two elements put together so when they are separated it forms a new substance.
A physical change occurs when the composition of a substance does not change. This means the substance retains its chemical identity but may undergo a change in its physical properties like shape, size, or state of matter. Examples include melting, freezing, boiling, or dissolving.
PROPERTIES OF PURE SUBSTANCE & MIXTUREPURE SUBSTANCE*have homogeneous / uniform in appearance*made up of only one kind of materials*maybe simple elements*chemically combined as compoundMIXTURE*made up of 2 or more components*can be separated by physical means*maybe homogeneous or heterogeneoushope its help you- ejohnnicole@yahoo.com
PROPERTIES OF PURE SUBSTANCE & MIXTUREPURE SUBSTANCE*have homogeneous / uniform in appearance*made up of only one kind of materials*maybe simple elements*chemically combined as compoundMIXTURE*made up of 2 or more components*can be separated by physical means*maybe homogeneous or heterogeneoushope its help you- ejohnnicole@yahoo.com
A pure substance contains only one kind of matter. It cannot be separated into other substances by physical means.
Changes of state of matter are physical processes, the molecule remain unchanged.
A chemical change occurs because compound is two elements put together so when they are separated it forms a new substance.
A mixture is multiple things mixed together - hence the name. A product with only one kind of substance is a "pure substance."
each substance has a density that differ from the densities of other substance.
I would say it depends on what kind of compound it is.
An element is the basic purist substance , it is composed of atoms of same kind ,not of elements hence an element can't be separated in elements , your question is wrong . A compound can be separated in component elements .
I want to say physical change
Physical properties are characteristics that can be observed or measured without changing the composition of the substance. When physical properties are altered, such as when a substance changes state (solid to liquid), the basic chemical composition remains the same, indicating that it is still the same kind of matter.
physical: color, shape, texture, smell, ext.
A mixture, such as pizza or soft drink, is a material made up of two or more subtances that can be easily separated by physical means, but a substance has a fixed composition, it cannot be separated by physical means.
Cake is a substance. It's not a "change" of any kind.