Answer:
Middle: Self heating containers are really expensive but are useful because they are easy to use, portable, and can be recycled, unlike a camp stove which is not as easily moved.
Explanation:
i neeed a better image for the first an last boo<3
A, B, C, and D, because they are changing from a solid to a liquid, liquid to solid, and solid to gas. Phase changes are when a solid, liquid, or gas, turns into a solid, liquid, or gas. Ex. Ice melting is a solid changing into a liquid. Hope this helps!
Answer:
NaCl + Ag(NO₃) --> Na(NO₃) + AgCl
Explanation:
Chemical equation:
NaCl + Ag(NO₃) --> Na(NO₃) + AgCl
The given reaction represent the double displacement reaction. Anion and cation of both reactant exchange with each others.
The anion of sodium chloride(Cl⁻) combine with cation of silver nitrate Ag⁺ and NO₃⁻ combine with Na⁺.
The third equation is correct while others are in correct.
Double replacement:
It is the reaction in which two compound exchange their ions and form new compounds.
AB + CD → AC +BD
SORRY CAUSE IDK IF THAT HELPED :(
Somewhat of the same element, have same amount of protons but different number of neutrons. <span />
Answer:
You better read more, kiddo.
If Calcium is Ca, why not Mg for magnesium; they are right next to each other; read until you know to Iron, Fe. (It is Fe because it is very long known, and kept its Latin name).
Like Sodium and Mercury and Lead &
Potassium. Look them up, & it will help you remember. Natrium, Hydragyrum, Plumbium et Kalium.
Good Luck!
Explanation: