Science Quiz

Which part of the plant cell contains chlorophyll?

• Cell wall

• Chloroplast

• Vacuole

• Nucleus

Which of the following is NOT a function of the human skeleton?

• Protection of organs

• Production of hormones

• Support and shape

• Movement

What is the primary function of red blood cells?

• Carry oxygen

• Fight infections

• Clot blood

• Produce hormones

Enzymes in the human digestive system:

• Break down food molecules

• Absorb nutrients

• Provide energy

• Transport oxygen

Which organ is responsible for filtering waste from the blood?

• Liver

• Lungs

• Kidneys

• Pancreas

Which gas is produced when an acid reacts with a metal?

• Oxygen

• Carbon dioxide

• Hydrogen

• Nitrogen

What is the chemical symbol for sodium?

• S

• Na

• So

• Sn

When water boils, it changes from:

• Liquid to solid

• Gas to liquid

• Liquid to gas

• Solid to gas

Which of the following is a chemical change?

• Melting ice

• Boiling water

• Burning paper

• Dissolving sugar in water

What type of bond holds atoms together in a molecule of water (H₂O)?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond