Even the "reconstituted" Orange Juice made by adding water to the frozen concentrate is a heterogeneous mixture because it would contain traces of orange pulp and other components of juice, not to mention the flavouring and other additives put in by the manufacturer.
Ammonia (NH3) is a compound, not an element. It is a homogeneous mixture when dissolved in water, but a pure sample of ammonia gas is considered a compound.
Borax is a compound composed of elements such as boron, sodium, and oxygen. It is neither an element nor a mixture.
Arsenic is a chemical element with the symbol As, atomic number 33.
First of all to correct your spelling. It is 'Concrete', not 'concrerte'. As concrete it is an heterogeneous mixture of cement, sand, gravel and water.
NO!!! Elements and compoounds exists as separate entities. Heterogeneous means a mixture of substances that are in different physical states. Compare to Homogeneous which means a mixture of substances that are in the SAME physical state. However, The element bromine(Br) is liquid at STP. The compound water(H2O) is also a liquid at STP. When mixed together to form bromin water, it is an homogeneous mixture.
Heterogeneous mixture.
Heterogenous
heterogeneous
Homogeneous mixture
Milk is a homogeneous mixture.
Homogeneous mixture
homogeneous mixture
Homogeneous mixture
It is an element.
Chocolate milk is a heterogeneous mixture.
it's a compound
Aluminum is an element.