Words

What is the scientific term for the smallest unit of a chemical element that retains its chemical properties?

• Molecule

• Atom

• Compound

• Ion

Tags

NGSS.MS-PS1-1

Which of the following is a measure of the amount of matter in an object?

• Weight

• Volume

• Density

• Mass

What is the process by which plants convert sunlight into chemical energy?

• Respiration

• Photosynthesis

• Transpiration

• Fermentation

Tags

NGSS.MS-LS1-6

Which of the following is the chemical formula for water?

Tags

NGSS.MS-PS1-1

What is the term for a substance made of two or more elements chemically combined in a fixed ratio?

• Mixture

• Solution

• Compound

• Element

Which of the following particles is found in the nucleus of an atom?

• Electron

• Proton

• Neutron

• Photon

What is the pH level of a neutral solution at 25°C?

• 0

• 7

• 14

• 10

Which of the following is an example of a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

What is the main gas found in the Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

Which of the following is a renewable source of energy?

• Coal

• Natural Gas

• Solar

• Nuclear