The greenish color of plant cells comes from

a. the cell membrane

b. chloroplasts

c. ink

Describe the observations that might be seen when a metal reacts with an acid?

Why are rift zones common places for igneous rock to form

Most of the periodic table is made of what type of element? Metals Nonmetals Metalloids

Calcium chloride contains calcium and chloride ions. write the ground-state electron configuration for the chlorine ion.

What is the symbol for the ion with 19 protons and 18 electrons?

According to the graph, which activity has used the largest amount of water over the past twenty years?

Tiffany leaves balloons filled with helium gas inside her car in on a sunny day when she returns to her car some some of the balloons are much larger and a few have popped explain what happened

If the pH indicator bromothymol blue was added to the nitric acid solution, it's colour would be?

Which statement describes a chemical reaction? Atoms in the products are rearranged to form new substances. Atoms in the reactants are rearranged to form new substances. Atoms in the products change into new atoms to form new substances.

The gases CO₂ (g) and NH₃ (g) can be liquefied at 20°C by compressing them to sufficiently high pressures. A student claims that NH₃ (g) can be liquefied at a lower pressure than CO₂ (g) can be liquefied.