Sig Figs
How many sig figs in 0.00251
3
convert
515km to dm
5.15 x 106 dm
The structure at the center of the atom that consists of most of its mass.
What is the nucleus
What is the value of Avogadro's number?
6.022x1023
The 18th group of the periodic table, these elements are known for their stability.
What are noble gases?
How many sig figs in 34.3021
6
Convert
122.355s to ms
122355 ms
The neutral subatomic particle
What is the neutron?
How many moles are present in 34.16g of uranium?
Molar Mass of uranium = 238.03 g/mol
0.1435 mol
This group of the periodic table reacts violently with water.
What are alkali metals (group 1)?
Round 1245kg to 2 sig figs
1200
Convert
27.4 m/s to km/hr
98.6 km/hr
The loss or gain of this subatomic particle results in ions.
What is an electron?
How many sulfur atoms are in 3.8 mol of sulfur?
2.3 x 1024 atoms
The atoms of this group form ions with a -1 charge.
What are halogens (group 17)?
Solve
1.54 x 0.03060 x 0.69
0.033
How many 1cm squares would it take to construct a square that is 1m on each side?
10000 squares
Atoms with the same number of protons but differing numbers of neutrons
What is an isotope?
What is the mass in grams of 1.100 x 1023 gold atoms?
36.98g
Predict the charge of the ion formed by Aluminum.
+3
Solve
(47.3 + 2.341)/(5.99 - 5.572)
120
Convert
2.554 mg/mL to g/L
2.554 g/L
This name refers to a positive ion.
What is cation
How many helium atoms are there in a blimp containing 536kg of helium?
8.07 x 1028 atoms
The name given to the group of elements that make up the center of the periodic table.
What are transition metals?