Isotopes practice

Match the following

• element with different neutron numbers

• electrons

• sum of protons and neutrons

• isotope

• negative charge found in the cloud

• nuetrons

• determines the element identity

• atomic mass

• neutral charge, # makes isotopes

• proton

Tags

NGSS.MS-PS1-1

What are isotopes?

• Elements with the same atomic number but different mass numbers.

• Elements with different atomic numbers but the same mass number.

• Elements with both the same atomic number and mass number.

• Elements with different atomic numbers and different mass numbers.

Tags

NGSS.HS-PS1-8

Isotopes of the same element have the same atomic number / # of protons

• True

• False

Oxygen has three naturally occurring isotopes: oxygen-16, oxygen-17, and oxygen-18. Which of these isotopes is the most abundant in nature?

• Oxygen-16

• Oxygen-17

• Oxygen-18

Carbon-14 is commonly used in radiocarbon dating. How many protons, neutrons, and electrons does a carbon-14 atom have?

• 6 protons, 6 neutrons, 6 electrons

• 6 protons, 8 neutrons, 6 electrons

• 14 protons, 14 neutrons, 14 electrons

• 14 protons, 6 neutrons, 14 electrons

Tags

NGSS.HS-PS1-8

The isotope uranium-235 is used as fuel in nuclear reactors. How many protons and neutrons does a uranium-235 atom have?

• 92 protons, 235 neutrons

• 143 protons, 92 neutrons

• 92 protons, 143 neutrons

Tags

NGSS.HS-PS1-8

If an isotope of an element has 47 protons and 61 neutrons, what is the atomic symbol for this isotope?

• 47Ag

• 61Cu

• 108Pd

Tags

NGSS.HS-PS1-8

Tritium (Hydrogen 3) is an isotope of hydrogen used in some types of nuclear reactions. How many protons, neutrons, and electrons does a tritium atom have?

• 1 proton, 2 neutrons, 1 electron

• 1 proton, 1 neutron, 1 electron

• 2 protons, 1 neutron, 2 electrons

Tags

NGSS.MS-PS1-1

Plutonium-239 is a radioactive isotope used in nuclear weapons. How many protons, neutrons, and electrons does a plutonium-239 atom have?

• 94 protons, 145 neutrons, 94 electrons

• 239 protons, 239 neutrons, 239 electrons

• 145 protons, 94 neutrons, 145 electrons

Tags

NGSS.HS-PS1-8

Deuterium (Hydrogen 2) is another isotope of hydrogen. How many protons, neutrons, and electrons does a deuterium atom have?

• 1 proton, 1 neutron, 1 electron

• 2 protons, 2 neutrons, 2 electrons

• 1 proton, 2 neutrons, 1 electron

Tags

NGSS.MS-PS1-1