Science 6 Benchmark 2 (Midcourse)

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What is a compound in chemistry?

Back

A compound is a substance formed when two or more elements are chemically bonded together, represented by a formula.

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Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms bonded together.

Front

What are protons, neutrons, and electrons?

Back

Protons are positively charged particles found in the nucleus of an atom, neutrons are neutral particles also in the nucleus, and electrons are negatively charged particles that orbit the nucleus.

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Front

How do you determine the atomic number of an element?

Back

The atomic number of an element is determined by the number of protons in its nucleus.

Front

What is the significance of the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting the number of protons and neutrons in the nucleus.

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What is the role of electrons in an atom?

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Electrons are involved in chemical bonding and reactions, determining how an atom interacts with other atoms.

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Front

What is a chemical formula?

Back

A chemical formula is a way of representing a compound using symbols for its constituent elements and numbers to indicate the ratio of atoms.

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Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a fixed shape and volume, liquids have a fixed volume but take the shape of their container, and gases have neither fixed shape nor volume.

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Front

What is the relationship between temperature and the state of matter?

Back

Temperature affects the energy of particles; higher temperatures can cause solids to melt into liquids and liquids to evaporate into gases.

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Front

What is the importance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, helping to predict their behavior and relationships.

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