Elements, Ions and Isotopes Flashcard

Front

What state of matter is At at room temperature?

Back

solid

Front

What is the isotope name for $ ^{15}_{4}Be $?

Back

beryllium-15

Front

In which period is vanadium found?

Back

period 4

Front

What is the isotope notation for a nucleus with 3 protons and 4 nucleons?

Back

⁴₃Li

Front

What is the isotope notation for a nucleus with 18 protons and 19 neutrons?

Back

₁₈³⁷Ar

Front

Define an element.

Back

A substance that cannot be broken down into simpler substances by chemical means.

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between isotopes of an element?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

How do you determine the number of neutrons in an isotope?

Back

Subtract the atomic number (number of protons) from the mass number.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.