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worty [1.4K]
3 years ago
15

3. What is an isotope?

Chemistry
2 answers:
prohojiy [21]3 years ago
6 0

Answer:

one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties

Explanation:

miv72 [106K]3 years ago
4 0

Answer:

what is an isotope? isotopes are versions of the same element. They have the same number of protons and electrons as the element but different mass numbers and number of neutrons.

Explanation:

hope this helps! :)

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The minimum amount of energy that particles must have in order to react is known as the... what?
Anika [276]
Activation energy

Hope this helps
4 0
3 years ago
Amylase was shown to work best at a ph of 7 in comparison of a ph of 2. If the stomach juices have a ph of 2, what do we know ab
GuDViN [60]

The salivary amylase did not perform well if the pH becomes lower because it needs neutral pH for performing its functions.

<h3>Effect of pH on the enzyme</h3>

We can say that the salivary amylase did not perform their function very well within the stomach due to unfavourable environment such as lower pH. Due to lower pH, the enzyme structure is damaged so unable to perform its function so we can conclude that the salivary amylase did not perform well if the pH becomes lower.

Learn more about pH here: brainly.com/question/172153

6 0
3 years ago
4/10<br> Identify the equation below as molecular or ionic.<br> Mg2+(aq) + 20H-(aq) → Mg(OH)2(s)
Crank

Answer:

Ionic

Explanation:

Magnesium hydroxide is an ionic compound and its formula is Mg(OH)2. An ionic bond is formed between two atoms when one is electron deficient and the other one is electron sufficient.  

Here, Mg2+ is positively charged while OH- is negatively charged. Being oppositely charged strong ionic bonds are formed between these two elements.  

An ionic molecule has high boiling and melting point and is stronger than molecules formed by covalent bonds.

6 0
4 years ago
What will happen to the equilibrium between carbonic acid and bicarbonate if I add a strong base to this system?
Helen [10]

Answer:

The equilibrium will shift in forward direction.

Explanation:

The equilibrium between the carbonic acid and bicarbonate ion is shown below as:

H₂CO₃ (aq) ⇔ H⁺(aq) + HCO₃²⁻(aq)

According to Le Chatelier's Principle, the change in any state of the equilibrium say temperature, volume, pressure, or the concentration, the equilibrium will oppose these changes and will shift in such a way that the effect cause must be nullified.

<u>If a strong base is added to the equilibrium, the base will accept hydrogen ions which are formed in the right side of the equilibrium. Thus, there will be less hydrogen ions present and to compensate this effect, the equilibrium will shift in forward direction.</u>

3 0
3 years ago
Which of the following involves a change in the physical properties of original substance?
Alexus [3.1K]
It honestly all depends
7 0
3 years ago
Read 2 more answers
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