Select the correct statement or statements about compounds and molecules:
a. a compound is made of just one type of element
b. a molecule is two or more atoms bonded together
c. a molecule can be made of one type of element or a mixture of elements.
d. compounds don't act like their elements; compounds
I believe the answers are: B) A Molecule is two or more atoms bonded together and: D) Compounds don't act like other elements.
A compound is a molecule which is made of atoms from different elements.
Compounds are useful beacuse they don't actually act like their elements. For example, if you think about , you observe that it's a compund of 2 atoms of hydrogen and 1 atom of oxygen, but the compund doesn't act like hydrogen or oxygen, it's water. Therefore, the first choice is correct.
Now, as we said before, a molecule is form by atoms, specifically by two or more, because a single atom cannot form a molecule, it would be just an atom by itself. Therefore, the third choice is correct.
So, the right choices are 1 and 3.
1) and 3)
B. A compound has different properties than the elements from which it is made
B is true because individual elements have different properties than the compound. Take NaCl (salt) for an example, Na (sodium) by itself is so reactive that if it touches water, it literally blows up (watch videos on the web very neat!), but when we pair it with Cl and make NaCl, it dissolves quietly and neatly, so we see that individuals elements have different properties than the final compound.
D. Compounds can be separated by physical methods.
A and D is the answer
Hope the answer is right
I believe the answers are B) and C
Molecules can be made of one type of element pr a mixture of element.
Molecule is two or more atoms bonded together.
Compound act like a different substance (because have different properties from its constituent elements).
A molecule is the combination of one or more atoms. These atoms may be from different elements are of the same elements. All the compounds are molecule but not all the molecules are compound. For example,
H₂O is a water molecule and also a compound. H₂ is just a molecule not a compound because both atoms are from same element.
The compound have different properties from its constituent elements. e.g water is compound made up of hydrogen and oxygen. Hydrogen is flammable gas and oxygen support combustion, while water doesn't have these properties. However in mixture elements retain their own properties that's why mixture is different from the compound.
The right option is; A. Compounds can be separated by physical methods.
Compounds can be separated by physical methods is the statement about compounds that is false.
A compound is a molecule that is formed from the combination of two or more different chemical elements. The atoms of the different elements that form a compound are held together by chemical bonds (covalent and ionic) that are not easy to break. The component of a compound can only be separated by chemical means and not by physical methods. An example of a compound is water (H2O) which is composed of hydrogen (H) and oxygen (O) atoms.
answer: i don't know
you need to provide a picture, otherwise i can't tell you.
if you can provide one, i'd be more than happy to you with this!
a. a compound...