It is a metallic element.
homogenous mixture
A baba au rhum is a French cake flavoured with rum, or a kind of lingerie.
A baba au rhum is a French cake flavoured with rum, or a kind of lingerie.
It is a plasma. Technically plasma is a kind of matter.
matter is in everything
Pareil au même - les deux pareil
Homogeneous matter
If you want to find an au pair or even if you are an au pair yourself, my recommendation is to try findaupair.com. The website it's very easy to use and it will give you right the information that you need in a matter of seconds. You will see that it has 2 categories, one for au pairs and one for families and you can select the country that you need from there and see the information you need.
'un pain au chocolat' (also 'chocolatine') is a kind of puff pastry with a small bar of chocolate melt inside.
a chemical change proude a different kind of matter
A pure substance contains only one kind of matter. It cannot be separated into other substances by physical means.
Cultural Care is one of the most popular and largest agencies in Paris. There is also Au Pair Paris which is well known as well. The best agency is a matter of opinion.