Physical Science NCFE Review

Front

What is the balanced equation for the reaction of magnesium with hydrochloric acid?

Back

Mg + 2HCl -> MgCl2 + H2

Front

What is the half-life of Fermium-253?

Back

0.334 seconds

Front

How many half-lives does it take for a radioactive sample to be considered completely decayed?

Back

10 half-lives

Front

What is the total time for Fermium-253 to be considered completely decayed?

Back

3.34 seconds

Front

What type of reaction is represented by the equation 3Ca + 2AlCl3 -> 3CaCl2 + 2Al?

Back

Single displacement

Front

How are liquids arranged in a beaker based on density?

Back

From bottom to top: milk, water, oil, ethanol

Front

What is the atomic number of an atom with 9 protons?

Back

9

Front

How many neutrons are in an atom with an atomic number of 9 and a mass number of 19?

Back

10 neutrons

Front

What is the definition of density?

Back

Density is mass per unit volume.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume