Chemistry Review
What is the smallest unit of matter that still keeps the properties of an element?
What is an atom?
What type of scientist studies fossils and ancient life?
What is a paleontologist?
What organism makes its own food using sunlight?
What is a producer/ autotroph?
What process changes liquid water into water vapor?
What is evaporation?
What are tiny living organisms that can only be seen with a microscope called?
What are microorganisms or microbes?
What are the three common states of matter?
What are solid, liquid, and gas?
What are preserved remains or traces of organisms called?
What are fossils?
What do decomposers do in an ecosystem?
They break down dead organisms and recycle nutrients.
What process forms clouds when water vapor cools?
What is condensation?
Which type of microbe is used to make yogurt and cheese?
What are bacteria?
What type of change creates a new substance?
What is a chemical change?
Which era is known as the “Age of Dinosaurs”?
What is the Mesozoic Era?
What is the role of consumers/ heterotrophs in a food chain?
Consumers eat other organisms to get energy.
What is the term for water falling from clouds to Earth?
What is precipitation?
What type of microorganism causes the flu?
What is a virus?
What is the pH of a neutral, acidic, and basic substance?
What is 7, 0-6, and 8-14?
What principle states that deeper rock layers are older than layers above them?
What is the Law of Superposition?
What term describes all the living and nonliving things interacting in an area?
What is an ecosystem?
What percentage of Earth’s surface is covered by water?
What is about 70%?
How do helpful bacteria benefit humans?
They help digest food, recycle nutrients, and make certain foods.
What formula is used to calculate neutrons?
What is (rounded) atomic mass = atomic number (protons) + neutrons?
What are the 3 main types of rocks and the 2 subtypes of rocks?
What is sedimentary, metamorphic, igneous, and (intrusive/ extrusive)
Explain how energy flows through a food chain.
Energy moves from the Sun to producers, then to consumers, and finally to decomposers.
What percentage of Earth’s surface water is saline and freshwater?
What is 97% and 3%.
Why is handwashing important in preventing disease?
It removes harmful microbes that can spread illness.