When two or more substances combine, but each keeps its own properties, the new combination is called a (an) A) Element B) Mixture C) Compound D) Homogeneous substance

How many significant figures are there in the measurement 64,000 mg? A. 2 B. 3 C. 4 D. 5

Which of the following are likely to form an ionic bond? 1) two carbon atoms 2) carbon and hydrogen atoms 3) sodium and fluorine atoms 4) two silver atoms

What does the word giraffe comes from

The correct answer (reported to the proper number of significant figures) to the following is (12.67+19.2) (3.99) / (1,36+11.366) =

C (s) + S8 (s) → CS2 (l) How many grams of carbon disulfide will be produced if 7.70 g of C and 19.7 g of S8 are allowed to react completely?

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Name a type of asteroid and give a description.