Unit 3 Atoms, PTE, Radioactivity

This term means that there are different numbers of neutrons for an atom of an element.

• ion

• isotope

• atom

• ian

This term means that an atom of this element has lost or gained an electron.

• ion

• isotope

• atom

• ian

This model represents an atom of what element?

• aluminum

• carbon

• nitrogen

• boron

Tags

NGSS.MS-PS1-1

What is the name of this isotope shown?

• carbon-12

• carbon-13

• carbon-14

• carbon-15

Tags

NGSS.MS-PS1-1

What could you do to the image to make it a Carbon-11 isotope?

• Add another proton.

• Add another neutron.

• Take away a proton.

• Take away a neutron.

Tags

NGSS.MS-PS1-1

What subatomic particle determines the identity of an element?

• proton

• neutron

• electron

• nucleus

Element Z is located on the same period and is 2 spaces to the right of Element Y. If element Y has an atomic number of 120, what is the atomic number of element Z?

• 118

• 120

• 122

• 124

Tags

NGSS.HS-PS1-1

Which best describes the properties of Ni-59?

• It has 59 protons, 59 electrons, and 59 neutrons

• It has 28 protons, 59 neutrons, and 28 electrons.

• It has 28 protons, 31 neutrons, and 31 electrons.

• It has 28 protons, 31 neutrons, and 28 electrons.

Tags

NGSS.MS-PS1-1

Elements in the same group have...

• the same number of energy levels.

• similar chemical and physical properties.

• the same atomic number.

• the same atomic mass.

Which element below is the most reactive metal?

• Potassium

• Calcium

• Silver

• Bromine