A substance that donates H+ ions, conducts electricity, sour taste
What is an acid
200
The force that acts against movement
What is friction
200
The three subatomic particles of an atom
What is proton, neutron, and electron
200
The building blocks of the body
What is cells
300
An irreversible change in something, often forms new products, sometime requires heat or other energy
What is a chemical change
300
The force that acts against gravity on a falling object
What is air resistance
300
The flow of electrons
What is current
300
The genetic material found in all cells, the blueprint of the body
What is DNA
300
The four forces acting on an airplane
What is thrust, lift, weight, and drag
400
The reaction between an acid and a base that produces water and a salt
What is a neutralization reaction
400
The force that keeps objects afloat in water
What is buoyancy
400
An excess of electrical discharge, where if voltages can become high enough, electricity can leap through the air from one object to another (a natural phenomena)
What is lightning
400
The structure of DNA
What is a double helix (twisted ladder)
500
The effect of adding salt to water/ice (think about the ice fishing and making ice cream)
What is lowers the freezing point of water/ice
500
The four nucleotides that make up DNA
What is C (cytosine), G (guanine), T (thymine), A (adenine)