Consider the formation of water molecule. Hydrogen combines with oxygen to form a water molecule.
In this case, the total mass of the reactants = total mass of the products. Also, the number of atoms of hydrogen and oxygen in the reactants side and the products side are equal.
that's all I know
Answer:
In simple terms, this law states that matter can neither be created nor destroyed. In other words, the total mass, that is, the sum of mass of reacting mixture and the products formed remains constant.
HOPE IT'S HELPFUL!
Answer:
a chemical change are a change in color and the formation of bubbles.
chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.
Explanation:
Change it up a little bit and your teacher will never know. :)
This is because absorbed heat energy or released by water is dependent on mass of water.
q=mc delta T
where q is the amount of energy required, m is the mass , C is the specific heat capacity and delta T is change in temperature.
Answer:
C. A positive and a negative ion
Explanation:
Acids and bases are made up of charged particles known as ions. The ions present in acids are oppositely charged and are held together by strong electrostatic forces. When acids or bases are dissolved in water, the electrostatic forces holding their individual molecules together are weakened and these ions are free to move apart in a process known as dissociation. Dissociation occurs because of the attraction between the positive and negative ions in the acid and bases and the negative and positive polarity of water.
For example, when an acid like hydrochloric acid is dissolved in water it dissociates into positive and negative ions as follows:
HCl(aq) -----> H+ + Cl-
When a base like sodium hydroxide is dissolved in water, it dissociates into positive and negative ions as follows:
NaOH(aq) ----> Na+ + OH-
