What is the strongest acid among the following: orange juice (pH 4), bleach (pH 12.5), lemon juice (pH 2), oven cleaner (pH 13)?
Q2 ULTIMATE EXAM REVIEW- 8th GRADE 24-25

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Science
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8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Lemon juice (pH 2) is the strongest acid.
2.
FLASHCARD QUESTION
Front
How is lemonade classified if it consists of several substances that are not chemically combined?
Back
Lemonade is classified as a mixture.
3.
FLASHCARD QUESTION
Front
What is the main difference between homogeneous and heterogeneous mixtures?
Back
In homogeneous mixtures, the ingredients are so evenly mixed that they cannot be visibly distinguished, while in heterogeneous mixtures, the ingredients are visible.
4.
FLASHCARD QUESTION
Front
What happens to the mass of a box and crystal after the crystal is broken into pieces?
Back
The mass remains the same.
5.
FLASHCARD QUESTION
Front
What is the difference between iron and brass?
Back
Brass is a compound, while iron is not.
6.
FLASHCARD QUESTION
Front
Define a mixture.
Back
A mixture is a combination of two or more substances that are not chemically bonded.
7.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture in which the components are uniformly distributed and cannot be distinguished.
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