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What else can I help you with?
Is a molecule a substance that a chemical reaction can't break down?
Yes, a molecule is the smallest unit of a substance that retains all of the chemical properties of that substance. In a chemical reaction, molecules may rearrange or combine with other molecules, but they themselves are not broken down into smaller parts.
Why is gold considered as an element and an atom at the same time?
Gold is considered an element because it is a pure substance made up of only one type of atom. Each gold atom is the smallest unit of gold that retains its chemical properties, making it an atom as well. So, when we refer to gold, we are talking about both the element as a whole and the individual atoms that compose it.
How can a chemical change help you tell the difference between a compound and an element?
A chemical change can help you tell the difference between an element and a compound because an element is a pure substance that cannot be broken down or separated into other pure substances through chemical change while a substance that is made from two or more elements that have combined in a chemical change are known as compounds.
Can an element be broken down into anything?
Nuclear fission, the splitting of an atom's nucleus, will break an atom down into two or more different atoms and various forms of radiation.Fission usually occurs when an element is bombarded by neutrons. These particles smash into the nucleus and break it apart.For example, fission of uranium-235 in nuclear reactors is used to release energy:235U + n0 --> 236U -->144Ba + 89Kr + 3n0 + 177MeVThe additional neutrons released result in a chain reaction with 3 more uranium atoms reacting.An opposite process is fusion, where two or more elements combine and release energy. This is what happens in the sun.
Suppose you have a pure substance. How can you tell whether it is a compound or a element?
It is really easy to identify a mixture when it's a formula and if it's to different colored substances. In a formula a MIxture will be joined by a plus sign. WHen you are actually working with two substances look for the difference between the two take sulfur and Iron for example, you can see the little yellow speects, so you know right away that it is a mixture. A pure substance you can't just look at it a know it's compound or an element you have to find out if it's homogenous( you can only see one substance) or is it's Heterogenous( you can see more than one) these two you can just look at it and see if it's one or the other. Milk would be and example of homogeneous because you can only see the white nothing else. Sulfur and iron would be and example of heterogeneous because you can see more then one substance(even though Sulfur and Iron together form a mixture) In a elements case you need to look at the Formula it's in like Ne would be an element because it's only one substance. Also if it was Ne2 it still would be one but it's proper name would be a diatomic element but still considered an element.A compound can always be addentified by it's formula it will have to element together without a plus sign in between(remember that is a mixture.
What is a pure substance and will not break down on a periodic table?
an element
What would be the best way to identify whether or not an unknown substance is made of a certain element?
One way to identify if an unknown substance is made of a certain element is to perform a chemical analysis, such as spectroscopy or mass spectrometry, to determine the elemental composition. Another method is to use techniques like X-ray diffraction to analyze the crystal structure, which can provide information about the type of elements present in the substance.
What is a substance that chemical reactions cannot break down?
An element is a substance that chemical reactions cannot break down into simpler substances. Elements are made up of only one type of atom and cannot be further broken down by chemical means. Examples of elements include gold, oxygen, and carbon.
What substance is made of only one kind of atom and cannot break down to other substances by chemical reactions?
that would be an element ;)
What does Lithium have in it?
Lithium is an element. As such, it has no other substance in it, it is pure lithium. If you wished to analyse it further, you would have to break it down into subatomic particles.
Is a molecule a substance that a chemical reaction can't break down?
Yes, a molecule is the smallest unit of a substance that retains all of the chemical properties of that substance. In a chemical reaction, molecules may rearrange or combine with other molecules, but they themselves are not broken down into smaller parts.
Why is gold considered as an element and an atom at the same time?
Gold is considered an element because it is a pure substance made up of only one type of atom. Each gold atom is the smallest unit of gold that retains its chemical properties, making it an atom as well. So, when we refer to gold, we are talking about both the element as a whole and the individual atoms that compose it.
How did early chemist determine which substance were elements?
Basically, if they couldn't break it down into anything simpler, they figured it was an element. Often, they were right. But they often blew themselves up in the process.
A pure substance that cannot be broken down into any other substances by chemical or physical means is a?
A pure substance that cannot be broken down into simpler substances by physical or chemical means is an element. This is because Elements can't be broken down chemically into other substances because there is nothing to break them down into.
Is white powder an element when it is heated?
The temperature of a substance does not change whether it is an element or a compound, though some substances will react when heated. White powder is not any particular substance. There are many substances that can come in the form of a white powders, but the only one that is an element is phosphorus. All the rest are compounds, though some of those may break down into their base elements when heated.
How can a chemical change help you tell the difference between a compound and an element?
A chemical change can help you tell the difference between an element and a compound because an element is a pure substance that cannot be broken down or separated into other pure substances through chemical change while a substance that is made from two or more elements that have combined in a chemical change are known as compounds.
When you heat a substance how can you tell it has undergone a phase change?
Specific heat is used to identify substances. It is the amount of heat that is needed to raise a sample unit by one degree Celsius and is unique to each element, and therefore, unique to each compound.
