Timberlake Chemistry

How much liquid water can you change 20 C if you apply 20,000 J?

• 500 g

• 100,000 g

• 250 g

• 350 g

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the atomic mass of this element?

• 20

• 60

• 40

• 41

What does a represent?

• Proton

• Neutron

• Electron

Tags

NGSS.MS-PS1-1

What is the atomic number of this element?

• 20

• 60

• 40

• 41

Tags

NGSS.MS-PS1-1

Identify which are the products and reactants

a

b

reactants

products

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

The Law of Conservation of Mass states that

• compounds and elements are the same

• elements can be destroyed

• matter cannot be created or destroyed, but can be transformed

• mass is the same for all the objects if they need to exist

Tags

NGSS.MS-PS1-5

How is a chemical change different from a physical change?

• there is no difference

• a physical change creates a new substance

• a chemical change creates a new substance

Tags

NGSS.MS-PS1-5

Is burning wood a chemical or physical change?

• chemical

• physical

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the primary focus of Timberlake's Chemistry in terms of scientific study?

• Organic Chemistry

• Inorganic Chemistry

• General Chemistry

• Biochemistry

Which of the following is a key concept in Timberlake's Chemistry regarding atomic structure?

• Atoms are indivisible

• Electrons orbit the nucleus in fixed paths

• Protons and neutrons have the same mass

• Atoms are mostly empty space

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5