Pre-Lab 1. Describe atomic radius.

2. What are the charges of protons, neutrons and electrons? Which are attracted to each other?

3. As the distance between an electron and a proton increases, would they feel more or less of an attraction to the other?

4. What is ionization energy?

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Which description best characterizes the motion of particles in a solid?

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.