. Which statement best describes the relationship between the system and the surroundings?

The system is found in the surroundings but is not included as part of the surroundings.

The system is found in the surroundings and is part of the surroundings.

The system is found around the surroundings and includes the surroundings.

The system is found around the surroundings but does not include the surroundings.

. How does thermal energy naturally flow?

from an area of high temperature to an area of low temperature

from an area of high density to an area of low density

from an area of high specific heat to an area of low specific heat

from an area of high mass to an area of low mass

Which of the following is a statement of the first law of thermodynamics in relation to chemical and physical changes?

Energy cannot be created or destroyed.

Energy flows naturally from the system to the surroundings.

Energy flows naturally from high temperature to low temperature.

The energy released is greater than the energy absorbed.

The Periodic Table of the Elements is useful for revealing patterns and trends in the elements. Which statement accurately describes a pattern in the size of atomic radii in the Periodic Table of the Elements?

Atomic radii decrease from left to right across a period and increase from top to bottom in a group.

Atomic radii decrease from left to right across a period and decrease from top to bottom in a group.

Atomic radii increase from left to right across a period and increase from top to bottom in a group.

Atomic radii increase from left to right across a period and decrease from top to bottom in a group.

All elements found on the left side of the Periodic Table of the Elements have what properties in common?

They conduct heat and electricity

Electronegativity is...

how good an atom is at attracting electrons

the ability of an atom to lose electrons

the energy required to remove an electron from a specific atom

how easy it is to make friends.

What does the atomic number of an element represent?

The number of protons in an atom of the element

The total mass of an atom of the element

The number of electrons in an atom of the element

The number of neutrons in an atom of the element

What does the mass number of an atom represent?

The number of protons and neutrons in the nucleus of an atom

The number of protons in the nucleus of an atom

The number of neutrons in the nucleus of an atom

The number of electrons in the nucleus of an atom

Atoms of the same element with different numbers of neutrons

Atoms of the same element with different numbers of electrons

Atoms of different elements with different numbers of neutrons

Atoms of the same element with different numbers of protons

What is the average atomic mass?

The weighted average of all the isotopes of an element

The mass of the least common isotope of an element

The sum of the atomic numbers of all the isotopes of an element

The mass of the most common isotope of an element

Fall TEKS Review Chemistry

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Chemistry

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9th - 12th Grade

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Practice Problem

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Easy

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NGSS

HS-PS1-1, HS-PS1-2, HS-PS3-4

+14

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ANDREA CRAWFORD

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