B. compound
source is Glencoe Science book grade 7.
Also I just happening to be learning about this at school
Answer:Nhóm gồm tất cả các kim loại tan trong axit sunfuric đặc nóng nhưng không tan trong axit sunfuric lo
Al, Cu, Au.
Al, Fe, Cr.
Ag, Fe, Pt.
Ag, Cu, Hg.
Explanation:
Answer:
6 mass
Explanation:
because the si unit of gram is mass
Answer:
Atoms of matter are electrically neutral because their nuclei contain the same number of protons as there are electrons surrounding the nuclei. Electric current and charged objects involve the separation of some of the negative charge of neutral atoms.
A highly polar molecule that contains a weak bond between a hydrogen atom and another element would be a strong acid.
