Elements
are pure substances
Which of these Cannot be broken down any further?
Answer: Material composed of only one kind of matter throughout (same atoms or same molecules)
ELEMENT
: A substance that cannot be decomposed (broken down) into simpler substances by ordinary chemical means. Examples: gold, iron, carbon, hydrogen, oxygen, nitrogen.
Which elements Cannot be broken down?
Note that an element: consists of only one kind of atom, cannot be broken down into a simpler type of matter by either physical or chemical means, and. can exist as either atoms (e.g.
argon
) or molecules (e.g., nitrogen).
Which is the basic form of matter?
The Atom. All matter such as solids, liquids, and gases, is composed of
atoms
. Therefore, the atom is considered to be the basic building block of matter. However, atoms are almost always grouped together with other atoms to form what is called a molecule.
What has no charge at all?
Every atom has no overall charge (
neutral
). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Can ammonia be broken down by chemical means?
Ammonia, ethane, and propanal are the three compounds, and they break down by a chemical change to give
simple elements
.
Which means Cannot be broken?
Something indivisible
cannot be broken up or divided: it's rock solid. The most common use of the word indivisible is in the Pledge of Allegiance, where it is used to show how our country is united and can't be broken up. But you can use this word for any group or organization that seems indestructible.
What are the two substance mentioned in the poem?
What are the two substances mentioned in the poem? The two substances mentioned in thepoem is
element and compound
.
Can aluminum be broken down by chemical means?
A substance that cannot be broken down into chemically simpler components is an element. Aluminum, which is used in soda cans, is an element. A substance that can be broken down into chemically simpler components (because it has more than one element) is a
compound
.
What is the smallest unit of matter?
atom
, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
Which substances are called matter?
Anything that has mass and takes up space
is matter. Matter can be made from only one kind of material, or it can be a mixture of different kinds of materials. When matter is made of different types of materials, it is called a mixture. When matter is made of only one kind of material, it is a pure substance.
What is the smallest particle element?
An atom
is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.
What is no charge called?
All electric charges are either positive or negative. Like charges repel each other, unlike charges attract each other. Matter that has no overall charge is called
neutral
. In anything larger than an atom, this means that the number of protons and equals the number of electrons.
What is an atom called when the net charge is not zero?
So
an ion
is a special case of an atom when it has a total charge that is not zero. Usually if someone is talking about an atom with a positive or negative total charge, they will call it an ion rather than just an atom.
What particle has the least mass?
Of the three subatomic particles,
the electron
has the smallest mass. The mass of an electron is 1/1840 of an atomic mass unit (amu).
What Cannot be broken down by a chemical reaction?
Elements
are those pure substances that cannot be decomposed by ordinary chemical means such as heating, electrolysis, or reaction. Gold, silver, and oxygen are examples of elements. Compounds are pure substances formed by the combination of elements; they can be decomposed by ordinary chemical means.
