S8P1 Review
Flashcard
•
Science
•
7th - 9th Grade
•
Hard
+2
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
The law of conservation of mass states that in a closed system, the mass of reactants equals the mass of products. This means that matter cannot be created or destroyed in a chemical reaction.
Tags
NGSS.MS-PS1-5
2.
FLASHCARD QUESTION
Front
What is a valence electron?
Back
A valence electron is an electron that is found in the outermost shell of an atom and can participate in forming chemical bonds.
Tags
NGSS.HS-PS1-1
NGSS.HS-PS1-2
3.
FLASHCARD QUESTION
Front
What are heterogeneous mixtures?
Back
Heterogeneous mixtures are mixtures that do not have a uniform composition throughout. The different components can usually be seen and separated.
4.
FLASHCARD QUESTION
Front
What is the charge of a neutron?
Back
A neutron has no charge; it is neutral.
5.
FLASHCARD QUESTION
Front
How do you calculate the total mass of products in a chemical reaction?
Back
To calculate the total mass of products, add the masses of all reactants together. In a closed system, this total mass will equal the mass of the products.
Tags
NGSS.MS-PS1-5
6.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically bond together.
7.
FLASHCARD QUESTION
Front
What is the significance of group 1 elements in the periodic table?
Back
Group 1 elements, also known as alkali metals, all have one valence electron, making them highly reactive, especially with water.
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