Question

1. the standard si unit for temperature is: a) atmosphere, b) kelvin, c) fahrenheit, d) celsius, e) none of the above. 17) how many inches are in 2.80 ft? a) 0.233, b) 33.6, c) 4.29, d) 34, e) none of the above. 18) how many milliliters are in 17.5 l? a) 1.75×104, b) 1.75×103, c) 175, d) 1.75×10 - 2, e) none of the above. 19) a lead ball has a mass of 55.0 grams and a density of 11.4 g/cm3. what is the volume of the ball? a) 4.82 ml, b) 0.207 l, c) 0.207 ml, d) 4.82 l, e) none of the above. 20) the correct multiplier for the prefix milli is: a) 10 - 3, b) 10 - 9, c) 10 - 12, d) 10 - 6, e) none of the above. true/false. write t if the statement is true and f if the statement is false. 21) in physical changes, the atoms or molecules that compose the matter do not change their identity, even though the matter may change its appearance. 22) a chemical change occurs when matter does not change its composition. 23) liquid and gas molecules can be compressed while in a solid, the molecules are incompressible.

Explanation:

Step1: Recall SI unit of temperature

The standard SI unit for temperature is Kelvin.

Step2: Recall conversion factor for feet to inches

1 foot = 12 inches, so for 2.80 ft, the number of inches is $2.80\times12 = 33.6$ inches.

Step3: Recall conversion factor for liters to milliliters

1 L = 1000 mL, so for 17.5 L, the number of milliliters is $17.5\times1000=1.75\times 10^{4}$ mL.

Step4: Use density - mass - volume formula

The formula is $
ho=\frac{m}{V}$, so $V = \frac{m}{
ho}$. Given $m = 55.0$ g and $
ho=11.4$ g/cm³, $V=\frac{55.0}{11.4}\text{ cm}^3\approx4.82$ cm³. Since 1 cm³ = 1 mL, the volume is 4.82 mL.

Step5: Recall prefix multiplier for milli

The multiplier for the prefix milli is $10^{-3}$.

Step6: Analyze physical change statement

In physical changes, atoms or molecules do not change their identity, only the appearance of matter changes. So the statement is True.

Step7: Analyze chemical change statement

A chemical change occurs when matter changes its composition. So the statement "A chemical change occurs when matter does not change its composition" is False.

Step8: Analyze compressibility statement

Solids are generally incompressible while liquids and gases are compressible. So the statement is True.

Answer:

1. B. Kelvin
2. B. 33.6
3. A. $1.75\times 10^{4}$
4. A. 4.82 mL
5. A. $10^{-3}$
6. T
7. F
8. T