💎Physical Science: Chem Semester Final Flashcardizz (U1-6)

Front

What is the formula to calculate heat energy (q) required to change the temperature of a substance?

Back

q = m * c * ΔT, where m = mass, c = specific heat capacity, ΔT = change in temperature.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1°C.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to the surroundings.

Front

How do you identify groups in the periodic table?

Back

Groups in the periodic table are identified by numbers (1-18).

Front

What state are most nonmetals at room temperature?

Back

Most nonmetals are gases at room temperature.

Front

How many moles of a substance are in 110 g of CH4?

Back

6.85 mol of CO2 are produced from the combustion of 110 g of CH4.

Front

What is the specific heat of liquid water?

Back

The specific heat of liquid water is 4.184 J/g°C.

Front

What is the change in temperature (ΔT) if the initial temperature is 65°C and the final temperature is 70°C?

Back

ΔT = 70°C - 65°C = 5°C.

Front

What is the heat energy required to raise 5.0 g of water from 65°C to 70°C?

Back

104.6 J.

Front

What is the product of the combustion of methane (CH4)?

Back

The products are carbon dioxide (CO2) and water (H2O).