Inv6.Exp1 TeXt A

16. How is volume defined in atomic structure?

• The mass of an atom
• The space occupied by a three-dimensional solid
• The number of protons
• The atomic radius

17. What best describes a particle?

• A wave of energy
• A small, discrete point-like piece of matter or energy
• A collection of atoms
• A type of radiation

Tags

NGSS.HS-PS4-3

18. Which statement about atoms is correct?

• All atoms have the same number of neutrons
• All atoms have a positive charge
• All atoms uniquely define a chemical element
• All atoms have equal mass

Tags

NGSS.HS-PS1-7

19. What is the relationship between protons and atomic number?

• Atomic number equals total number of particles
• Atomic number equals number of neutrons
• Atomic number equals number of protons
• Atomic number equals number of electrons

20. What role does the nucleus serve in atomic structure?

• It contains only neutrons
• It contains protons and neutrons
• It contains only electrons
• It contains all subatomic particles

Tags

NGSS.HS-PS1-8

21. What is the primary characteristic of protons in terms of their electrical charge?

• They carry a negative charge
• They carry a positive charge
• They are electrically neutral
• They have no electrical properties

22. Which statement best describes hydrogen as a chemical element?

• It is a colored, odorous gas
• It is a non-flammable liquid
• It is a colorless, flammable gas
• It is a solid at room temperature

23. Nuclear charge is directly related to:

• The number of neutrons in an atom
• The mass of the atom
• The ability of protons to attract electrons
• The number of electron shells

Tags

NGSS.HS-PS1-8

24. What defines the atomic number of an element?

• The total number of electrons
• The sum of protons and neutrons
• The total number of neutrons
• The total number of protons

25. Which of the following best defines matter?

• Anything that has mass only
• Anything that occupies space only
• Anything that can be seen
• Anything that has mass and occupies space