S2 Chemical Reactions

What is the principle that states mass is neither created nor destroyed in a chemical reaction?

• Conservation of Energy

• Conservation of Mass

• Conservation of Momentum

• Conservation of Charge

Which process is used to separate mixtures of liquids based on differences in boiling points?

• Filtration

• Chromatography

• Fractional Distillation

• Evaporation

What are the primary components of fossil fuels?

• Metals

• Hydrocarbons

• Salts

• Proteins

Which of the following is a major environmental pollutant?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Helium

What is the term for a chemical reaction that releases heat?

• Endothermic

• Exothermic

• Conservation of mass

• Fractional distillation

Which process is used to separate crude oil into different components?

• Endothermic reaction

• Conservation of mass

• Fractional distillation

• Chemical reaction

What is the principle that states mass is neither created nor destroyed in a chemical reaction?

• Exothermic

• Endothermic

• Conservation of mass

• Fossil fuels

What is a substance that can cause harm to the environment?

• Hydrocarbon

• Pollutant

• Crude oil

• Chemical reaction

What is the term for a reaction where a fuel reacts with oxygen to produce carbon dioxide and water?

• Combustion

• Photosynthesis

• Fermentation

• Neutralization

Combustion is known as what type of reaction?

• Endothermic

• Exothermic

• Neutralization

• Decomposition