Chemical Reactions

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What is a chemical reaction?

Back

A process in which substances (reactants) undergo a transformation to form new substances (products).

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What are the main types of chemical reactions?

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Synthesis, decomposition, single replacement, double replacement, and combustion.

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What is the law of conservation of mass?

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In a chemical reaction, mass is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Tags

NGSS.MS-PS1-5

Front

How do you determine if a chemical equation is balanced?

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By ensuring that the number of atoms of each element is the same on both the reactant and product sides.

Tags

NGSS.MS-PS1-5

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

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NGSS.MS-PS1-2

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What is a product in a chemical reaction?

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A substance that is formed as a result of a chemical reaction.

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What role does a catalyst play in a chemical reaction?

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A catalyst speeds up a chemical reaction without being consumed in the process.

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What is cellular respiration?

Back

A biochemical process in which glucose and oxygen are converted into water, carbon dioxide, and energy.

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NGSS.HS-LS1-7

Front

How many hydrogen atoms are typically found in a water molecule?

Back

2 hydrogen atoms.

Tags

NGSS.MS-PS1-1

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is upheld.

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NGSS.MS-PS1-5