Fact 1: Hydrogen bonds cause water to expand when it freezes. Fact 2: Hydrogen bonds Hydrogen bonds are primarily electrostatic in origin. Given the two facts above, something that is primarily electrostatic in origin causes water to expand when it what?
OPTIONS:
- heat
- freezes
- a hazard
- boiling
- moves
- reacts
- expelled
- it's state
freezes
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Fact 1: Apan is used for cooking food by heating food in it on a stove. Fact 2: Most bacteria are destroyed by heat. Given the two facts above, a pan is used for what by cooking food?
OPTIONS:
- kinetic energy
- freezing bacteria
- Light passing through water
- adding bacteria
- seasoning bacteria
- destroying bacteria
- Animal survival
- a hydraulic system
destroying bacteria
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Fact 1: An animal requires nutrients to grow and heal. Fact 2: Microbes provide nutrients to animals. Given the two facts above, what can help an animal to grow and heal?
OPTIONS:
- food
- heat
- bones
- energy
- cells
- microbes
- glycogen
- proteins
microbes
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Fact 1: High temperatures can cause an object to combust. Fact 2: Combustion generates toxic fumes. Given the two facts above, what can create toxic fumes?
OPTIONS:
- cigarettes
- High temperatures.
- smoking tobacco
- harmful substances
- fossil fuels
- chlorofluorocarbons
- Pesticides
- chemical reaction
High temperatures.
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