Grade 10 Chemistry Assessment: Measurement, Units, & Data Analysis

Comprehensive practice flashcards covering SI units, temperature conversions, density, scientific notation, and dimensional analysis based on the Grade 10 Chemistry assessment.

What is the internationally agreed-upon system of measurements used by scientists and chemists worldwide?

Système Internationale d'Unités (SI)

How is a base unit defined in a system of measurement?

A unit in a system of measurement that is based on a specific object or event in the physical world.

Which SI base unit is used to measure the amount of substance?

Mole ($\text{mol}$)

What is the official SI base unit of temperature used to describe thermodynamic kinetic energy?

Kelvin ($\text{K}$)

What temperature on the Kelvin scale represents absolute zero?

$$0\,\text{K}$$

What equation must a chemist use to convert a temperature measurement from degrees Celsius ($^\circ\text{C}$) to kelvins ($\text{K}$)?

$$\text{K} = ^\circ\text{C} + 273$$

How is a derived unit defined in the SI system?

A unit that is defined by a mathematical combination of two or more SI base units.

Which volume equivalence between milliliters ($\text{mL}$) and cubic centimeters ($\text{cm}^3$) is mathematically correct?

$$1\,\text{mL} = 1\,\text{cm}^3$$

Why do chemists classify density as an intensive physical property of matter?

Because it is independent of the amount of substance present.

If an unknown metal block has a mass of $17.92\,\text{g}$ and a volume of $2.00\,\text{cm}^3$, what is its calculated density?

$$8.96\,\text{g/cm}^3$$

How is the number 384,000 correctly written in scientific notation?

$$3.84 \times 10^5$$

What is the result of the division problem $(9 \times 10^8) \div (3 \times 10^{-4})$?

$$3 \times 10^{12}$$

What systematic approach to problem-solving uses conversion factors to convert from one unit to another?

Dimensional analysis

How is a conversion factor scientifically defined?

A ratio of equivalent values having different units.

In scientific notation, when is the exponent negative?

When the decimal point is moved to the right to obtain a coefficient between 1 and 10.

If an aluminum sample placed in a 25-mL graduated cylinder containing $10.5\,\text{mL}$ of water causes the level to rise to $13.5\,\text{mL}$, what is the volume of the sample?

$$3.0\,\text{mL}$$

What is the calculated mass of an aluminum sample with a volume of $3.0\,\text{mL}$ and a density of $2.7\,\text{g/mL}$?

$$8.1\,\text{g}$$

In ancient Egyptian units, what were the conversion equivalents between cubits, palms, fingers, and millimeters?

1 cubit = 7 palms, 1 palm = 4 fingers, and 1 finger = $18.75\,\text{mm}$.