Which mineral has the same hardness as a fingernail?

a. Diamond

c. Fluorite

b. Topaz

d. Gypsum

Which characteristic is shared by all living things? living on land eating other organisms reproduction moving around

What is causing his hair to stand up and separate from each other?

suppose 100ml of perchloric acid is neutralized by exacly 46.9 ml of 0.75m lithium hydroxide. what is the concentration of the perchloric acid?

Give the correct nuclide symbol for gallium-71. How many protons and neutrons are in this isotope?

How does a balanced chemical equation show that mass is conserved

Chemistry Lab Question: Filtration Compare the size the particles of refined sand with the size of particles of the dissolved salt in the mixture? Compare the size of the pores in the filter paper, to the sizes of the sand and salt particles?

What is the [oh-] in a sample of lime juice with a ph of 2.0?

What is the subscript present in NaCl?

Identify each element as a metal, metalloid, or nonmetal. a. gold b. silicon c. manganese d. sulfur e. barium

Extreme (1, 2, or 3) in the center of nebulae causes hydrogen atoms to shed their electrons and collide with one another. The (4, 5, or 6) of the collisions cause the smaller, bare nuclei to fuse into large helium nuclei. 1. expansion 2. heat 3.