Show:
physical and chemical changes
adaptations
chemical reactions
atoms
other 8th grade science
100
What type of change takes place when a can is crushed?
What is a physical change?
100
a period of inactivity, slow metabolism, and decreased body temperature.
What is hibernation?
100
What is the left side of a chemical equation called?
What is a reactant?
100
The smallest part of matter.
What is an atom?
100
What is an iron core wrapped in a coil of wire called?
What is a solenoid?
200
What type of change occurs when iron rusts?
What is a chemical change?
200
a characteristic that improves an individuals ability to survive and reproduce in a particular environment.
What is adaptations?
200
What is the right side of a chemical equation called?
What is a product?
200
A bird, water, pencil, and oxygen have this in common.
What is they are all made of atoms?
200
How can you make an electromagnet stronger?
What is add more coils, increase the power source, or use a thicker iron core?
300
What is one of the clues for a chemical change?
What is color change, gas formation, energy change, solid formation?
300
The ability of predators or prey to disguise themselves.
What is camouflage?
300
What is the name of the small number in a chemical equation?
What is a subscript?
300
What is the maximum number of electrons that can go into the 2nd energy level?
What is 8?
300
What is the ph range for an acid?
What is 0-6.9?
400
What type of change takes place when an effervescent tablet is added to water?
What is a chemical change?
400
The change in the inherited characteristics of a population over time.
What is natural selection?
400
What law states that in a chemical equation, matter is neither created nor destroyed?
What is the law of conservation of mass/matter?
400
How many electrons are needed to make an atom stable?
What is 8?
400
What tool helps you identify an unknown organism by distinguishing between two characteristics that describe the unknown?
What is a dichotomous key?
500
What type of change occurs when a substance dissolves in another substance?
What is a physical change?
500

1. overpopulation

2. genetic variation

3. competition (struggle for survival)

4. successful reproduction

What are the parts of Natural selection?
500

What coefficient is needed to balance the following equation: 2H2 + O2 ---> ____H2O

What is 2?
500
How many total electrons fill the first two energy levels in an atom?
What is 10?
500
The type of bioengineering technology helps a plant or animal by permanently changing the plant or animal.
What is adaptive technology/bioengineering