In this list, which substance can be classified as a type of matter?

You notice that there is more traffic between 8 and 9 in the morning. This would be a(n)

In the number 123.4, which digit is not significant?

A substance's boiling point is an example of a chemical property.

Specific Heat is a sort of resistance to temperature change: the larger a substance's Specific Heat, the more energy it takes to make the the substance's temperature change.

Doing experiments to test your hypothesis is part of the scientific method.

How many significant figures are in each of the following numbers? 47 grams

How many significant figures are in each of the following numbers? 0.04350680

Give the answer to the following calculation using the correct number of sig figs. (2.53 x 6.87) ÷ (5.9 + 6) = ?

State whether the following is an extensive or intensive property: Weight

State whether the following is an extensive or intensive property: Odor

Find the average of the three trials:  7.674 mL, 7.672 mL, 7.672 mL.  NO need to include unit in your answer.

A student sets out to determine the density of a metal sample just like you did in experiment 2. To measure the volume, he immersed his sample in a graduated cylinder containing water and measured the volume of the displaced liquid. If after placing his metal sample in water some bubbles were formed in the graduated cylinder, how would his calculated density compare to the true density of his sample? Choose from higher, lower, no change, can’t tell.

One human heartbeat requires about 1.0 joule of energy. How many kilojoules of energy would be consumed by the heart during 9.9 hours of sleep at a heart rate of 60. beats per minute? (Be careful with sig figs!). NO need to include unit in your answer. 

Round the number 36.01 to 2 significant figures. Give the answer in decimal notation (not scientific).

What is the volume (in mL) of 1.50 gram of titanium? Give the answer in decimal notation to the correct number of significant figures. Do NOT include unit. 

Convert the number 3.060 x 10-3 to decimal notation.

Written in scientific notation, 0.000 000 33 is

Which of the following numbers has 3 significant figures? Mark all that apply.

Choose all that apply: which of the following element(s) is/are a transition metal(s)?

Fill in the blank with a "+" or "-" sign and a number. (example: +5 or -4). What is the charge of an ion that contains 50 protons and 46 electrons?

Name the element that has average atomic mass closest to 12. 

Select the correct symbol for the element. Potassium

What is the symbol of the Alkaline earth metals group and Period 3?

What is the mass number of an atom of potassium that has 20 neutrons?

A sample of silicon has three naturally occurring isotopes: Si-28 (mass 28.0 amu); Si-29 (mass 29.0 amu) and Si-30 (mass = 30.0 amu). Which isotope is the most abundant?

Which of the following is NOT true for the atoms 13N, 14N, and 15N?

Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of 118 50 Sn

307 degree F is equivalent to _________ degree C.

A mixture can be distinguished from a pure compound by its

Which of the following is a physical change?

Which of the following substances will float in ethanol?

The state of matter that has a definite volume but no definite shape is

Which of the following is an example of a heterogenous mixture?

Naturally occurring neon (Ne) has three isotopes with the following data neon-20, 90.92% (19.99 amu) neon-21, 0.257% (20.99 amu) neon-22, 8.82% (? amu) The atomic mass for Ne is 20.183 amu. What is the mass in amu for neon-22? Report 2 decimal places in your final answer. No need to include unit.