Atoms and Periodic Table

Which statement correctly describes the location and charge of the neutrons in an atom?

• The neutrons are inside the nucleus and have a positive charge.

• The neutrons are outside the nucleus and have a neutral charge.

• The neutrons are outside the nucleus and have a negative charge.

• The neutrons are inside the nucleus and have a neutral charge.

 What is the mass number of this element?

• 5
• 27
• 32
• 59

Tags

NGSS.MS-PS1-1

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

How many protons, electrons and neutrons are present in an atom of carbon, C, with the mass of 12?

• 12 protons, 12 electrons, 12 neutrons

• 6 protons, 12 electrons, 6 neutrons

• 12 protons, 6 electrons, 12 neutrons

• 6 protons, 6 electrons, 6 neutrons

Tags

NGSS.MS-PS1-1

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the identity of the following model?

• Helium

• Beryllium

• Boron

• Carbon

Tags

NGSS.MS-PS1-1

A group of students made claims about what makes an element the most reactive. Which student is correct?

• Rocio: An element with the most neutrons is the most reactive.

• Tyler: An element with 7 electrons in the outer shell.

• Daniel: An element with the same number of protons and electrons.

• Glenda: An element with 8 valence electrons

Which of the following does NOT describe the elements in 8A?

• They are called the Noble Gases

• They have 8 valence electrons

• They have 8 energy levels

• They are chemically stable

What does the 1.00794 stand for?

• mass number

• atomic number

• average atomic mass

• number of protons

What charge does an atom have when it LOSES electrons?

• positive

• negative

• neutral

• polyatomic