Introductory Chemistry: Comprehensive Exam Prep with Verified Answers & A+ Guarantee

INTRODUCTORY TO CHEMISTRY EXAM TEST WITH FREQUENTLY
TESTED QNS & 100% VERIFIED ANS / GRADED A+ / GUARANTEED
PASS!!




1. A cup of hot soup initially at 85.4 °C cools by 33 °C. What is the new temperature?**

A) 52.4 °C

B) 52 °C

C) 53 °C

D) 51.6 °C




Answer: B) 52 °C

Explanation: The temperature change (33 °C) has no decimal places, so the final
temperature is reported with the same precision: 85.4 °C – 33 °C = 52 °C.




2. A sample of iron is an example of:

A) Element

B) Compound

C) Mixture

D) Solution




Answer: A) Element


Please leave a review. Your review is my motivation. Success in your Exams

,Explanation: Iron (Fe) is a pure substance composed of only one type of atom.




3. A student weighs 175.5 lbs and holds a 25.0-lb barbell. What is their combined mass?

A) 200 lbs

B) 200.5 lbs

C) 200.50 lbs

D) 205 lbs




Answer: B) 200.5 lbs
Explanation: The sum must match the least precise measurement (175.5 lbs + 25.0 lbs =
200.5 lbs).




4. A theory is another word for a(n):

A) Model

B) Law

C) Measurement


Please leave a review. Your review is my motivation. Success in your Exams

, D) Experiment




Answer: A) Model

Explanation: A theory is a well-substantiated explanation based on evidence, akin to a
Model.




5. Convert 63.5 °C to Fahrenheit.

A) 146.3 °F

B) 145 °F

C) 150 °F

D) 162 °F




Answer: A) 146.3 °F

Explanation: Use the formula \( F = (C \times 9/5) + 32 \).




6. An atom with 9 protons and 10 electrons is:

A) Neutral

B) An ion



Please leave a review. Your review is my motivation. Success in your Exams