Grade 6 EOG Practice Questions – Atoms & Elements

What is the smallest particle of matter?

• Cell

• Molecule

• Atom

• Element

Which part of the atom has a positive charge?

• Proton

• Neutron

• Electron

• Nucleus

Where are neutrons located in an atom?

• Orbiting the nucleus

• Inside the nucleus

• Outside the atom

• In the electron cloud only

Electrons have what kind of charge?

• Positive

• Negative

• Neutral

• Both positive and negative

Tags

NGSS.MS-PS2-3

The nucleus of an atom contains:

• Protons and neutrons

• Protons and electrons

• Electrons only

• Neutrons and electrons

Which statement is true about all atoms of the same element?

• They have the same number of protons

• They always have the same number of neutrons

• They have different atomic numbers

• They are different in every way

What determines an atom’s identity (which element it is)?

• The number of protons

• The number of neutrons

• The number of electrons

• The number of molecules

Which of the following is an element?

• Water (H₂O)

• Salt (NaCl)

• Oxygen (O₂)

• Sugar (C₆H₁₂O₆)

Which of the following is NOT an element?

• Carbon

• Hydrogen

• Gold

• Water

The Periodic Table is organized by:

• Atomic mass

• Atomic number

• Number of molecules

• Size of the element