A material composed of two or more substances is a mixture. … A substance that can be broken down into chemically simpler components (because it has more than one element) is a
compound
. For example, water is a compound composed of the elements hydrogen and oxygen.
Do compounds have 2 or more components?
Elements can be chemically combined into compounds, therefore, a compound consists of
two or more elements combined
, in definite proportions, by chemical means. Compounds may be formed by combining atoms of their constituent elements by ionic bonds or by covalent bonds.
What can compounds be broken down into?
Compounds can be broken down into smaller compounds,
or their basic elements
, by chemical change. … Heat can also be used to break down sodium hydroxide into the simpler compounds sodium oxide and water. Electrolysis is a chemical change produced by sending an electric current through a compound.
Can compounds be broken down?
Compounds can be
broken down into their constituent elements by chemical changes
. A chemical change (that is, a chemical reaction) is one in which the organization of the atoms is altered.
Can an element 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).
When compounds are broken apart Energy is?
A
decomposition reaction
is a reaction where complex compounds or molecules are broken down into simpler molecules. Usually, these reactions take a lot of activation energy to start the reaction, and that energy takes in the form of heat, thus making the reaction endothermic.
Can a solution be broken down?
A compound
can be broken down into simpler substances only by chemical reactions
, such as electrolysis. A solution is a homogeneous mixture, meaning that it is the same throughout. … The components of a mixture can be separated by physical means, such as filtration and distillation.
Can compounds be broken down by physical means?
They
cannot be broken into anything else
by physical or chemical means. Compounds – pure substances that are the unions of two or more elements. They can be broken into simpler substances by chemical means.
How do you break down elements?
Elements have properties defined by the number of protons in the nucleus. If you want to break down an atom, you have
to knock a proton out of nucleus or add a proton to the nucleus
. This takes a tremendous amount of energy (think nuclear bomb type of energy) and the process is called fission and/or nuclear physics.
How can mixtures and compounds be broken down?
The ingredients are physically mixed but chemically separate. Often they are visibly distinct. A compound can be separated into simpler substances by chemical methods/reactions. A mixture can
be separated into simpler substances by physical or mechanical methods
.
What is two or more substances not chemically combined called?
A mixture
is a physical combination of two or more substances where there is no chemical combination or reaction.
What is a material made up of two or more substances that can be separated by physical means?
mixture
. a material made up of two or more substances that can be easily separated by physical methods. compound.
What is form when two or more substance are combined?
A mixture
is created when two or more different substances are physically combined and can be separated back into its original substances.
What two substances Cannot be broken down by chemical changes?
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.
Which substance Cannot be separated into two or more substance using physical means?
An element
is a pure substance that cannot be separated into simpler substances by chemical or physical means.
Which substance can not be broken down by chemical means?
Elements
are the simplest forms of matter and therefore cannot be broken down into simpler substances by any chemical or physical means. Elements are the building blocks for all other substances. Some examples of elements include hydrogen, oxygen, carbon, and sulfur.
What happens when compounds break apart?
When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called
dissociation
. … If the force between the ions and the water molecules is strong enough to break the bonds between the ions, the compound dissolves.
Can a mixture be chemically separated?
Mixtures: • Two or more elements or compoundS NOT chemically combined. No reaction between substances.
Mixtures can be separated into their components by chemical or physical means
. The properties of a mixture are similar to the properties of its components.
Which substance gets broken down in a homogeneous mixture?
The substance that gets broken down in a homogeneous mixture is the:
colloid solution solvent-solute
. Which property describes a mixture? Select three options. It can be separated by physical methods.
When two or more substances are combined and do not react What is the result?
When two or more elements or compounds are blended without combining chemically, you've got
a mixture
. Each substance in a mixture keeps its own properties, and mixtures can be separated using physical or mechanical means. Solids, liquids and gases can all be blended into mixtures.
Is a pure substance that Cannot be broken down by chemical methods into simpler components?
Elements
are pure substances that cannot be broken down into simpler substances by ordinary chemical means.
What is homogenous and heterogenous mixture?
A mixture is composed of one or more pure substances in varying composition. … Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout. The most common type of homogenous mixture is a
solution
, which can be a solid, liquid, or gas.
What is a substance in which the atoms of two or more elements are combined in a fixed proportion?
A compound
is a substance that contains two or more elements chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds.
What contains two or more gaseous liquid or solid substances blended evenly throughout the mixture?
A homogeneous mixture
contains 2 or more gaseous, liquid, or solid substances blended evenly throughout. Another name for a homogenous mixture is called a solution. A solution's particles are so small that they cannot be seen with a microscope and will NEVER settle to the bottom of their container.
Which of the following Cannot be broken down into simple substances?
Elements
cannot be broken down into a simpler substance. Chemical element,also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.
