Atomic Structure

Which atomic particle has a negative charge?

• proton
• neutron
• electron
• all of the above

Which of these phrases best describes an atom?

• a positive nucleus surrounded by a hard negative shell
• a positive nucleus surrounded by a cloud of negative charges
• a hard sphere with postive and negative charges on the outside
• a negative nucleus surrounded by protons and neutrons

Tags

NGSS.MS-PS1-1

Which of the following particles has the smallest mass?

• neutron
• proton
• nucleus
• electron

What is true about an atom?

• Most of the space in an atom is taken up by the nucleus
• Atoms are mostly empty space
• Atoms have no mass
• Electrons have much more mass that protons or neutrons.

Tags

NGSS.MS-PS1-1

The positively charged parts of an atom are the

• protons
• electron clouds
• neutrons
• electrons

Tags

NGSS.MS-PS1-1

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

• 18 protons

• 40 protons

• 22 protons

• 21.9 protons

Tags

NGSS.MS-PS1-1

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

• 18 neutrons

• 40 neutrons

• 22 neutrons

• 21.9 neutrons

Tags

NGSS.MS-PS1-1

Look at this picture of Argon off the periodic table. Which of the following is true for this element when it is neutral?

• 18 electrons

• 40 electrons

• 22 electrons

• 21.9 electrons

Tags

NGSS.MS-PS1-1

Which part of an atom is used to identify it?

• number of protons

• number of neutrons

• number of electrons

Tags

NGSS.MS-PS1-1

When you two atoms with different masses, Carbon-12 and Carbon-13 for example, what type of atom do you have?

• Neutral atom

• Ion

• Isotope

Tags

NGSS.HS-PS1-8