Bohr's Planetary Model represented what?

Electrons spin around the nucleus in a fixed orbital

Protons spin around the nucleus in fixed orbitals

An atom is a round sphere shaped like a planet

A covalent bond forms when

a sea of mobile electrons surround the cations

valence electrons are shared between atoms

An ionic bond forms when

valence electrons are transferred between atoms

a sea of mobile electrons surround the cations

The columns are called families. What characteristics do chemical families share?

Same number of valence electrons

In general, metals react by ___.

sometimes gaining and sometimes losing valence electrons

Physical Science Chemistry Final Review

Authored by Villamor Gloria

Science

10th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

An example of a chemical property is ____.

Flammability

Change of State

Burning

Density

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A milk shake is a(n)

mixture

compound

element

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Hydrogen peroxide is a(n)

mixture

compound

element

Physical properties are

properties that can be observed without changing the identity of the substance

properties that describe how a substance changes into a completely different substance

properties that we can only observe with our eyes

properties that we need special tools to observe

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A gas

has a definite shape but no definite volume

has a definite volume but no definite shape

has fast-moving particles

What term describes a solid changing to a liquid?

Deposition

Sublimation

Freezing

Melting

How is a solid defined?

Indefinite shape and indefinite volume

Definite shape and definite volume

Found in the stars

Definite volume, indefinite shape

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Physical Science Chemistry Final Review

An example of a chemical property is ____.

A milk shake is a(n)

Hydrogen peroxide is a(n)

Physical properties are

A gas

What term describes a solid changing to a liquid?

How is a solid defined?

What term describes a liquid changing to a gas?

What charge do electrons have?

The atomic number of an elements is the total number of which particles in the nucleus?

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