Ajanitor comes across a spilled substance on the floor of a high school chemistry lab. he wants to make sure the liquid is neutral before he cleans it up. what would be safest to add to the puddle? a. pour on a base b. pour on a buffer c. pour on an acid

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