Salt – Sugar – Vinegar – Baking soda
Sugar – it’s not acidic or basic; it doesn’t react chemically with vinegar or baking soda.
Hydrogen – Solar – Geothermal – Diesel
Diesel – it’s a fossil fuel, not a clean energy source.
Boiling – Frying – Baking – Freezing
Freezing – it doesn’t involve heat; it slows chemical reactions instead.
Carbon dioxide – Methane – Oxygen – Nitrous oxide
Oxygen – it’s not a greenhouse gas; the others trap heat in Earth’s atmosphere
Plastic – Glass – Paper – Wood
Plastic – it’s synthetic; the others are natural materials.
Soap – Shampoo – Detergent – Olive oil
Olive oil – it’s not a cleaning agent; it’s a lipid (fat)
Carbon monoxide – Carbon dioxide – Methane – Water vapor
Carbon monoxide – it’s toxic to humans but not a greenhouse gas.
Starch – Cellulose – Protein – Sucrose
Protein – it’s not a carbohydrate; the others are made of sugar molecules.
Recycling – Composting – Landfilling – Reusing
Landfilling – it doesn’t reduce waste; it’s a disposal method
Toothpaste – Mouthwash – Soap – Perfume
Perfume – it’s for fragrance, not cleaning or hygiene.
Oxygen – Carbon dioxide – Water vapor – Nitrogen
Water vapor – it’s not a gas element or compound from air composition, but evaporated water.
Coal – Natural gas - Biofuel – Petroleum
Biofuel – it’s renewable, produced from living organisms.
Yeast – Gluten – Baking powder – Vinegar
Gluten – it’s a protein, not a leavening or acid agent.
Acid rain – Ozone hole – Smog – Global warming
Ozone hole – it’s caused by CFCs (chlorofluorocarbons), not CO₂ or combustion pollutants.
Lemon juice – Vinegar – Bleach – Orange juice
Bleach – it’s strongly basic and corrosive, the others are acidic
Ice melting – Rusting iron – Boiling water – Evaporating alcohol
Rusting iron – it’s a chemical change, the others are physical changes
Nitrogen oxide – Sulfur dioxide – Carbon dioxide – Oxygen
Oxygen – it’s not an air pollutant; the others contribute to smog or acid rain.
Water – Oil – Alcohol – Vinegar
Oil – it’s non-polar (doesn’t mix with water); the others are polar liquids
Plastic – Paper – Glass – Aluminum
Plastic – it’s made from petroleum.
Butter - Milk – Yogurt – Cheese
Butter – it’s made mostly of fat, the others are produced by fermentation.
Vinegar – Lemon juice – Ammonia – Carbonated water
Ammonia – it’s a base, the others are acidic.
Greenhouse effect – Evaporation – Photosynthesis – Combustion
Photosynthesis – it removes CO₂, while the others release or trap it.
Fiber - Iron – Calcium – Vitamin D
Fiber – it’s not a nutrient absorbed by the body; it passes through the digestive system.
Biodegradable – Compostable – Recyclable – Nonrenewable
Nonrenewable – it refers to resources, not material decomposition.
Air freshener – Deodorant – Sunscreen – Soap
Soap – it removes dirt chemically, the others mainly mask or block odors/effects