Leah4sci MCAT

When you add more resistors to a circuit… does the current go UP or DOWN? 🤔
Most students guess wrong here because circuits don’t behave the way you expect.
In my newest video, you’ll finally see what actually happens when current splits in series vs parallel circuits, why resistance sometimes goes DOWN when you add more components, and the shortcut that makes these questions way easier on the MCAT.
https://youtu.be/BW4cmgB65Fw

6 days ago | [YT] | 3

Leah4sci MCAT

What part of resistors still feels most confusing to you:
how they affect voltage, current, resistance, or knowing which equation to use?

I just posted a new video showing you the one simple diagram that helps voltage, current, and resistance finally click.


https://youtu.be/fKTKSkkgbbI

2 weeks ago | [YT] | 2

Leah4sci MCAT

🔴 Monday! Aldehyde and Ketone Reactions
Register here 👉 Leah4sci.com/Orgolive

Aldehydes and ketones show up in MCAT organic chemistry, but you do not need to memorize every mechanism.

What you do need is the logic behind carbonyl reactivity.

This Monday I’m teaching a focused session on my Orgo channel covering how nucleophiles attack carbonyls, why aldehydes and ketones react differently, and how to predict common reaction outcomes without brute memorization.

You will learn:
✔️ Why the carbonyl carbon is electrophilic
✔️ How to predict nucleophilic addition outcomes
✔️ How reduction changes aldehydes and ketones
✔️ When acetal protection matters
✔️ How to think through carbonyl reactions on exam-style questions

📅 LIVE this Monday at 8:30 PM ET

If aldehydes and ketones feel like a memorization game, this session will show you the pattern exams actually test.

Join here 👉 Leah4sci.com/Orgolive

❓ How confident are you with carbonyl reactions right now on a scale of 1 to 10?
Let me know in the comments ⬇️

2 weeks ago | [YT] | 0

Leah4sci MCAT

🔴 Tonight! Resistors in Series vs Parallel

Circuit questions shouldn’t make your brain freeze.

Tonight I’ll show you how to make sense of resistors in series and parallel, understand the circuit equations, and use mental math shortcuts so you can reason through circuits instead of guessing.

Tonight, you’ll learn how to:

✅ Understand what resistors actually do in a circuit
✅ Read a circuit diagram without your brain shutting down
✅ Recognize series vs parallel circuits instantly
✅ Understand the equations behind circuit behavior
✅ Use mental math shortcuts to combine components quickly

If circuits have felt confusing or formula-heavy, this session will make them finally start to click.

📅 Live Tonight at 8:30 PM ET

Join here 👉 Leah4sci.com/live

📚 When is your MCAT?
Comment and let me know 👇

3 weeks ago | [YT] | 14

Leah4sci MCAT

Help me choose this week's livestream topic!
Skipped last week due to the blizzard and kiddo being home for 2 snow days.

But the sun is shining, the snow is melting,
so let's do it!

Which topic should we cover this week?

Vote below 👇 or suggest another topic in the comments

4 weeks ago | [YT] | 4

Leah4sci MCAT

🔴 Tonight! Amino Acids on the MCAT

Join here 👉 Leah4sci.com/live

Amino acids don’t have to feel like pure memorization.
Tonight, I’ll show you how to read the side chains and reason your way to the answer.

Tonight, you’ll learn how to:

✅ Break down amino acids using side chain chemistry
✅ Determine polar vs nonpolar and charged vs neutral from structure alone
✅ Identify acidic and basic amino acids without memorizing pKa tables
✅ Recognize chirality and key structural exceptions
✅ Answer MCAT amino acid questions without guessing

This is one of the most memorization heavy MCAT topics, but after tonight, it won’t feel that way.

📅 Live Tonight at 8:30 PM ET
See you there? 👀

Join here 👉 Leah4sci.com/live

📚 When is your MCAT?
Comment and let me know 👇

1 month ago | [YT] | 17

Leah4sci MCAT

📢 MCAT students!
Are you ready for the first MCAT livestream of 2026?!
I'm thinking of going live as early as tomorrow night! 🎉
help me choose a topic!

Vote below 👇
Or suggest another topic in the comments

1 month ago | [YT] | 5

Leah4sci MCAT

🔴 Wednesday ! H-NMR Foundation for MCAT Spectroscopy
Register here 👉 Leah4sci.com/Orgolive

Spectroscopy shows up on the MCAT, and you can't tackle NMR passages without understanding the fundamentals first.
This Wednesday I'm teaching a beginner deep-dive H-NMR session on my Orgo channel covering splitting patterns, chemical shifts, and integration—the core concepts you need before applying them to MCAT-style problems.

You'll learn:
✔️ How to identify splitting patterns using the n+1 rule
✔️ How to recognize functional groups from chemical shift ranges
✔️ How to read integration values to determine molecular structure
✔️ The systematic approach for analyzing H-NMR spectra
✔️ Practice problems to build your foundation

📅 LIVE this Wednesday at 8:30 PM ET

If spectroscopy feels shaky, start here. You need these H-NMR basics locked in before you can apply them under MCAT time pressure.

Join here 👉 Leah4sci.com/Orgolive

❓ How comfortable are you with spectroscopy right now?
Let me know in the comments below ⬇️

1 month ago | [YT] | 13

Leah4sci MCAT

🔴 TONIGHT! The MCAT Reset: Stop Guessing What to Do Next

Join here 👉 Leah4Sci.com/workshop

If you’re studying for the MCAT but not actually sure where you stand, this is for you.

Tonight, I’ll walk you through how to:

✅ Figure out exactly where you are in your MCAT prep
✅ Identify what you’ve already done that actually counts
✅ Stop guessing and changing strategies every day
✅ Know what to focus on next and what to stop doing
✅ Leave with clarity instead of overwhelm

Guessing creates whiplash.
Clarity creates progress.

📅 Live Tonight at 8:30 PM ET
See you soon? 👀

Join here 👉 Leah4Sci.com/workshop

📚 Where are you in your MCAT prep right now?
Comment below 👇

1 month ago | [YT] | 4

Leah4sci MCAT

🔴 TONIGHT! The MCAT Reset: Stop Guessing What to Do Next

Join here 👉 Leah4Sci.com/workshop

If you’re studying for the MCAT but not actually sure where you stand, this is for you.

Tonight, I’ll walk you through how to:

✅ Figure out exactly where you are in your MCAT prep
✅ Identify what you’ve already done that actually counts
✅ Stop guessing and changing strategies every day
✅ Know what to focus on next and what to stop doing
✅ Leave with clarity instead of overwhelm

Guessing creates whiplash.
Clarity creates progress.

📅 Live Tonight at 8:30 PM ET
See you soon? 👀

Join here 👉 Leah4Sci.com/workshop

📚 Where are you in your MCAT prep right now?
Comment below 👇

1 month ago | [YT] | 9