STAAR Review - Chemistry and Physics

STAAR Review - Chemistry and Physics

Assessment

Flashcard

Science

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

How many atoms are there in H₂SO₄?

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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