Chapter 1 Review & Sectional 1 Preparation

Flashcards reviewing heat calculations across water phase changes, density and mass conversions, specific gravity, and Chapter 1 exam preparation.

When is Sectional 1 scheduled to take place?

On Wednesday, $09/23/2026$.

What specific heat value is used for water in its solid (ice) and steam states?

$0.48\,\text{calories}$ per gram per degree Celsius ($0.48\,\text{cal}/(\text{g}\cdot^\circ\text{C})$).

What specific heat value is used for water in its liquid state?

$1.00\,\text{calorie}$ per gram per degree Celsius ($1.00\,\text{cal}/(\text{g}\cdot^\circ\text{C})$).

What formula is used to calculate the amount of heat required for a temperature change?

$$\text{Amount of Heat} = \text{Specific Heat} \times \text{Mass} \times \Delta T$$

In the lecture's first example, how much heat is required to raise $480\,\text{g}$ of ice from $-20\,^\circ\text{C}$ to $0\,^\circ\text{C}$?

$$4608\,\text{calories}$$

In the lecture's first example, how much heat is required to raise $480\,\text{g}$ of liquid water from $1\,^\circ\text{C}$ to $50\,^\circ\text{C}$?

$$23520\,\text{calories}$$

What is the total heat required to raise $480\,\text{g}$ of water from $-20\,^\circ\text{C}$ to $50\,^\circ\text{C}$ in the first example?

$28128\,\text{calories}$ (or $28.1\,\text{kcal}$).

How do you convert a mass from kilograms ($\text{kg}$) to grams ($\text{g}$)?

Multiply the mass in kilograms by $1000$ (moving the decimal point three places to the right).

In the second example ($560\,\text{g}$ of water), how much heat is required for the solid state range from $-5\,^\circ\text{C}$ to $0\,^\circ\text{C}$?

$$1344\,\text{calories}$$

In the second example ($560\,\text{g}$ of water), how much heat is required for the liquid state range from $1\,^\circ\text{C}$ to $100\,^\circ\text{C}$?

$$55440\,\text{calories}$$

In the second example ($560\,\text{g}$ of water), how much heat is required for the steam state range from $101\,^\circ\text{C}$ to $135\,^\circ\text{C}$?

$$9139.2\,\text{calories}$$

What is the total heat required to raise $560\,\text{g}$ of water from $-5\,^\circ\text{C}$ to $135\,^\circ\text{C}$?

$$65923.2\,\text{calories}$$

When performing density calculations for a gas, why must volume be converted from milliliters to liters?

Gas volumes are measured in liters ($\text{L}$) rather than milliliters ($\text{mL}$), so volume must be converted by dividing milliliters by $1000$.

What is the density of a gas whose volume is $375\,\text{mL}$ and mass is $10\,\text{g}$?

$$26.67\,\text{g/L}$$

What formula is used to calculate the mass of an object when its density and volume are known?

$$\text{Mass} = \text{Density} \times \text{Volume}$$

What is the mass of a rectangular block that has a density of $57\,\text{g/mL}$ and a volume of $7\,\text{mL}$?

$$399\,\text{g}$$

What is specific gravity, and what information does it provide?

Also called relative density, specific gravity tells whether a substance will float or sink in water.

What types of questions will be included on Sectional 1?

Multiple choice, fill in the blank, listing, and short answer questions (including calculations and drawing/labeling diagrams such as the heating curve of water).