Isotopes (select one or more):

are chemicals that react only with protons.
for an element have the same chemical properties.
are atoms of an element that differ in the number of protons.
are atoms of an element that differ in the number of neutrons.
for an element are equal in frequency.

Isotopes

1. Do not react with protons.
2. Have the same chemical properties (but usually different physical properties).
3. Do not differ in the number of protons.
4. Differ in the number of neutrons.
5. Has nothing to do with frequency.

Isotopes? Oh, I love those little guys! Let me break it down for you:

- Are chemicals that react only with protons? Well, that's a nope-tape! Isotopes don't care much about protons when it comes to reactions.

- For an element, do they have the same chemical properties? Well, sort of, but not quite. Isotopes are like siblings – they have some similarities, but they also have their quirks.

- Are atoms of an element that differ in the number of protons? Nope, that's not quite right. Isotopes are like cousins, they have the same number of protons but differ in the number of neutrons.

- Are atoms of an element that differ in the number of neutrons? Ding, ding, ding! We have a winner! Isotopes are like different flavors of the same element, with different numbers of neutrons sprinkled in for that extra atomic spice.

- For an element, are isotopes equal in frequency? Oh boy, I wish! Isotopes come in all shapes and sizes, and some are more popular than others. So, no, they don't party in equal frequency.

Hope that clears things up and brings a smile to your atomic face!

Isotopes:

- Are atoms of an element that differ in the number of neutrons.
- For an element have the same chemical properties.

To determine which statements about isotopes are true, let's understand what isotopes are.

Isotopes are atoms of the same element that have the same number of protons but differ in the number of neutrons. This means isotopes have different atomic masses.

Now, let's assess each statement:

1. Isotopes are chemicals that react only with protons.
This statement is not true. Isotopes are variations of an element, not chemicals themselves. They can react with other atoms or molecules, but it's not limited to reacting only with protons.

2. Isotopes, for an element, have the same chemical properties.
This statement is generally true. Isotopes of an element have the same chemical properties because they have the same arrangement of electrons in their outermost energy levels. This arrangement determines an atom's chemical behavior.

3. Isotopes are atoms of an element that differ in the number of protons.
This statement is not true. The number of protons uniquely determines an atom's element, so isotopes of the same element have the same number of protons. It is the number of neutrons that differentiates isotopes.

4. Isotopes are atoms of an element that differ in the number of neutrons.
This statement is true. Isotopes have the same number of protons but differ in the number of neutrons. These variations in neutron count result in varying atomic masses.

5. Isotopes, for an element, are equal in frequency.
This statement is not necessarily true. The frequency or abundance of isotopes can vary for different elements. Some elements may have one predominant isotope, while others may have multiple isotopes in significant amounts.

In summary:
- Isotopes are atoms of an element that differ in the number of neutrons, not protons.
- Isotopes of the same element generally have the same chemical properties.
- The frequency or abundance of isotopes can vary for different elements.