What are the two types of pure substances? Give definitions for each.

Read the chemical equation shown. Cl2 + 2NaBr → 2NaCl + Br2 Which statement is true about this chemical equation? Cl (chlorine) is oxidized and Br (bromine) is reduced. Cl (chlorine) is reduced and Br (bromine) is oxidized.

How does meiosis I differ from meiosis II

Which chemical formula corresponds to this structural formula? C6H6H6H2 C14H6 C6H12 C6H14

A liquid that occupies a volume of 2.68L has a mass of 2.40 kg. What is the density of the liquid in kg/L?

What is the difference in the beginning between primary succession and secondary succession? a. secondary succession has water b. secondary succession has soil c. primary succession has soil d. primary succession has water

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps