Isotopes

Front

Which of the following are isotopes?
a) ¹⁴ ₇X
b) ¹⁴ ₆X
c) ¹⁵ ₇X
d) ¹⁵ ₈X

Back

¹⁴ ₇X and ¹⁵ ₇X

Front

If X is the symbol for an element, which of the following two symbols represent isotopes of the same element?   I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

Back

I and IV

Front

How is carbon-12 different from carbon-14?

Back

They have a different number of neutrons.

Front

What do carbon-12 and carbon-14 have in common?

Back

they have same number of protons

Front

What can you conclude about carbon-14 from its name?

Back

It has a mass number of 14.

Front

What do these isotopes of carbon all have in common?

Back

atomic number and electrons

Front

Isotopes are atoms of the same element with different __________, therefore they have different __________.

Back

neutrons ; mass number

Front

Do carbon-12 and carbon-14 isotopes differ by two protons?

Back

false

Front

Atoms of the same element which have a different number of neutrons are called _________________.

Back

isotopes

Front

What happens if a proton is added or removed from an atom?

Back

It becomes a different element.