How many atoms are there in H₂SO₄?
STAAR Review - Chemistry and Physics

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
There are 7 atoms in total: 2 Hydrogen (H), 1 Sulfur (S), and 4 Oxygen (O).
2.
FLASHCARD QUESTION
Front
What is the formula to calculate acceleration?
Back
Acceleration (a) = Net Force (F) / Mass (m).
3.
FLASHCARD QUESTION
Front
If a 5 kg block is pulled with a net force of 32 N, what is its acceleration?
Back
The acceleration is 6.4 m/s².
4.
FLASHCARD QUESTION
Front
What is the force acting on a 20 kg bike accelerating at 10 m/s²?
Back
The force is 200 Newtons (F = m * a).
5.
FLASHCARD QUESTION
Front
Which subatomic particle determines the identity of an element?
Back
The proton determines the identity of an element.
6.
FLASHCARD QUESTION
Front
How many elements are in the compound Mg₂As₃COHNi₂?
Back
There are 6 elements: Magnesium (Mg), Arsenic (As), Carbon (C), Oxygen (O), Hydrogen (H), and Nickel (Ni).
7.
FLASHCARD QUESTION
Front
What is the definition of a compound?
Back
A compound is a substance formed when two or more elements chemically bond together.
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