Atoms, Ions and Isotopes

What do these 3 pictures represent? (Choose 2 correct answers)

• ions

• isotopes

• neutral atoms

• compounds

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-8

If a neutral atom gains more electrons, it will become a(n)

• Positive ion

• Negative ion

• Isotope

• New element

If a neutral atom loses electrons, it will become a(n)

• Positive ion

• Negative ion

• Isotope

• New element

Isotopes are atoms that have different...

(choose 2 correct answers)

• Mass numbers

• numbers of Protons

• Atomic Numbers

• numbers of Neutrons

• element names

What is the atomic number of the atom shown in this model?

• 11

• 12

• 23

Tags

NGSS.MS-PS1-1

Is this a neutral atom, or an ion?

• A neutral atom, because the protons = electrons

• A neutral atom, because the protons = neutrons

• An ion, because there are no electrons in the nucleus

Tags

NGSS.MS-PS1-1

(Use your PT) How many neutrons would be in the most common isotope of Beryllium, Be?

• 5

• 4

• 9

Which particles are found in the nucleus of an atom?

• protons and electrons

• protons and neutrons

• neutrons and electrons

• protons and electrons

How do you calculate the charge of an atom?

• protons + electrons

• protons - electrons

• protons + neutrons

• mass number - protons

How do you calculate the mass number of an atom?

• protons - electrons

• protons + neutrons

• mass number - protons