Radioactive Isoptopes
This isotope of uranium is commonly used as fuel in nuclear reactors.
What is uranium-235?
This chemical has 1 Sodium atom and 1 Chlorine
What is NaCl, Sodium Chloride
Balance - H2 + O2 = H2O
If a line graph shows that the temperature rises from 15°C to 25°C over a period of 4 hours, what was the average rate of temperature increase per hour?
What is 2.5°C per hour?
This is the formula used to calculate the density of an object.
What is density = mass/volume?
Time required for half of a radioactive substance to decay.
What is Half-Life?
This is a Polyatomic Compound with a Sulfur atom and four oxygen atoms
Sulfate SO4
Determine the formula for the ionic compound formed between aluminum (Al) and chloride (Cl) ions. Aluminum forms a 3+ ion, and chlorine forms a 1- ion.
What is AlCl3?
When one variable increases while the other decreases, such as the relationship between the amount of time spent watching TV and academic performance, this type of correlation is known as what?
What is a negative correlation?
If an object has a mass of 50 grams and a volume of 25 cubic centimeters, its density is this many grams per cubic centimeter.
What is 2 g/cm³?
A sample of a radioactive substance starts with 200 grams and has a half-life of 6 hours. After 18 hours, how much of the substance remains?
What is 25 grams?
This type of bond forms when one atom gives up one or more electrons to another atom, resulting in a positively charged ion and a negatively charged ion that attract each other. An example is the bond between sodium and chlorine in table salt.
What is an ionic bond?
Balance this equation SO2 + O2 =SO3
2SO2 + O2 = 2SO3
A bar graph displays the weight of packages in kilograms. If five packages weigh 2 kg, 4 kg, 3 kg, 5 kg, and 6 kg respectively, what is the average weight of the packages?
What is 4 kg?
The density of an object can be affected by changes in this property of the substance.
What is temperature or pressure?
This process occurs when an unstable atomic nucleus loses energy by emitting radiation.
What is radioactive decay?
This compound has A potassium atom, Nitrogen atom and 3 Oxygen Atoms
What is KNO3
Balance this equation
C2H4+O2 = CO2 +H2O
C2H4+3O2 = 2CO2 +2H2O
A scatter plot shows a positive correlation between hours of exercise and distance run in kilometers. If a person exercises for 2 hours and runs 8 km, what can you infer about the general trend in the data?
What is that more hours of exercise generally lead to running a greater distance?
An object with a mass of 250 grams and a volume of 50 cubic centimeters is placed in a liquid with a density of 3 grams per cubic centimeter. Determine what will occur to the object
What is sink?
The half-life of this isotope is used to date objects up to about 50,000 years old
What is Carbon-14?
This compound, used in fertilizers and known chemically as ammonium nitrate, has the formula NH4NO3
What is ammonium nitrate?
Balance this equation - CO2+H2O =C6H1206 + O2
6H2O+6CO2 = C6H1206 + 6O2
This type of correlation occurs when two variables appear to be related due to coincidence or because of the influence of a third, hidden variable, rather than any actual direct relationship. What is this misleading type of correlation called?
What is a spurious correlation?
If you have two substances with the same mass but different volumes, the substance with the smaller volume will have this property.
What is greater density?