Explanation:
Mixtures and solutions
are examples of combinations of substances that are not joined together chemically.
What are two or more chemically combined?
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 is two or more substances not chemically combined?
A mixture
is a physical combination of two or more substances where there is no chemical combination or reaction. Mixtures combine physically in no specific proportions. They just mix. Solids, liquids and gases can be combined to create a mixture.
What are two substances mixed together called?
In simplest terms,
a chemical change (or chemical reaction)
occurs when two substances are mixed together and transform into a third substance. Not all substances react chemically when mixed together, however. For example, some substances, when mixed together, remain simply a mixture of those two substances.
What are the two types of pure substances?
By their chemical composition, pure substances get divided into two types –
elements and compounds
.
What is the basic form of matter that Cannot be broken down any further?
Elements
are pure substances that cannot be broken down into simpler substances by ordinary chemical means.
What is a substance that Cannot be broken down?
Element
.
An element
is a pure substance that cannot be separated into simpler substances by chemical or physical means.
What happens when two substances are mixed together?
A mixture is created when two or more different substances are physically combined and can be separated back into its original substances.
A chemical reaction
occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances.
Can you describe the solutions that are being mixed?
Solutions are
homogenous mixtures
: particles of one substance (the solute) are mixed together with the particles of another substance (the solvent) – eg salty water. Heterogeneous mixtures: large aggregations (clumps) of the substances are mixed together – eg emulsions like oil in water.
What are the 4 types of mixtures?
MIXTURES? together. Four to be specific, called
SOLUTIONS, SUSPENSIONS, COLLOIDS and EMULSIONS
.
What are two substances?
Matter can be broken down into two categories:
pure substances and mixtures
. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.
What are 10 examples of pure substances?
- Hydrogen gas.
- Gold metal.
- Sugar (sucrose)
- Baking soda (sodium bicarbonate)
- Ammonia.
- Diamond.
- Copper wire.
- Silicon chip.
How many types of pure substances are there?
The
two
main types of pure substances are compounds and elements. They consist of a single type of particle or compound.
Can be broken down into two or more components?
throughout the matter). 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.
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
.
Is a substance that Cannot be further broken down by any chemical reaction?
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.
