Chemistry Quiz

During a science class, Ava asked, "What is the smallest unit of an element that retains its chemical properties?"

• Molecule

• Atom

• Compound

• Ion

During a science experiment, Michael observed that one type of subatomic particle is positively charged. Which subatomic particle is it?

• Electron

• Neutron

• Proton

• Neutron

Emma is conducting a science experiment with water. In a water molecule (H2O), how many hydrogen atoms are there?

• One

• Two

• Three

• Four

Tags

NGSS.MS-PS1-1

Abigail and Scarlett are working on a science project. They learn that a certain type of bond is formed when two atoms share electrons. What type of bond is this?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

During a science experiment, Benjamin and Aria were asked to identify which of the following is a diatomic molecule. Can you help them?

• Oxygen (O2)

• Water (H2O)

• Methane (CH4)

• Carbon dioxide (CO2)

Tags

NGSS.MS-PS1-1

During a science experiment, Hannah and Liam were asked to identify the chemical formula for table salt. What is the correct formula?

• NaCl

• KCl

• Na2SO4

• CaCO3

During a science class, Henry asked, 'Which particle is found in the nucleus of an atom and has no charge?'

• Proton

• Electron

• Neutron

• Positron

Harper and Jackson are building a model of a carbon atom for their science project. How many valence electrons does a carbon atom have?

• 2

• 4

• 6

• 8

Emma and Avery are conducting a science experiment. What is the term for a molecule made up of two or more different elements?

• Element

• Compound

• Isotope

• Mixture

Tags

NGSS.MS-PS1-1

During a chemistry class, Arjun asked, 'Which of the following represents an ionic bond?'

• NaCl

• H2O

• CO2

• CH4