A. Testing a hypothesis
This leads to the other points
Non-metals have a larger number of outer electrons called valence electrons. Therefore, it is easier for them to "steal" valance electrons from other elements with fewer valence electrons(usually metals)
For example, Chlorine(Cl) has 7 ve-. When forming an ion it will steal one electron from a metal. and gain a charge of -1. Because the ion is NEGATIVELY charged, it will be called an anion.
Nonmetals form anions.
Vocab:
cation: Paws-itively charged ions (get it? because its a CAT ion?)
anion: negatively charged ions
Explanation:
solar and energy i had to answer this one before
Answer:
C
Explanation:
Rust is a chemical change (reaction) all of the other options only change the state meaning that it is a physical reaction.
Answer:
Dùng nam chân hút đc bột sắt ra khỏi hỗn hợp
Bột gỗ và bột nhôm thì bột gỗ tan trong nước còn bột nhôm thì không
Explanation:
