Unit 3 Lesson 1

An ice cube is placed in a glass of warm tea. Later, the ice has melted, and the tea is cooler. Which statement describes the transfer of energy?

• Energy has been transferred from the ice cube to the warm tea

• Light energy from the warm tea has been transferred to the ice cubes

• Energy from the warm tea has been transferred to the ice cubes and the glass

• Electrical energy has been transferred from the tea to the surrounding air and glass.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Into which other kinds of energy does a light bulb transform electrical energy?

Choose the two correct answers.

• chemical

• heat

• light

• motion

• sound

Energy is the ability to cause change in matter.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Saya is learning about electric circuits. She tries to light a bulb using a battery and a wire. Her design is shown. 

The bulb _____ light up because energy cannot be transferred unless  the wire is connected to the side of the bulb.

• will

• will not

Tags

NGSS.MS-PS3-5

This illustration is a/an _____________

• compound

• element

• mixture of elements

• mixture of elements and compounds

Tags

NGSS.MS-PS1-1

Two metal bars are each placed in a beaker containing the same solution. What evidence indicates that a chemical reaction is taking place in one of the beakers? Select ALL that apply.

• A gas is being given off.

• There is a change in color.

• The solution is clear and colorless.

• Bubbles are forming.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following are physical properties that could be used to identify a substance? Select all that apply.

• density

• flammability

• color

• melting point

Tags

NGSS.MS-PS1-4

What is true about a chemical reaction? Select all that apply.

• Under the same conditions, reactants will form the same products.

• All of the atoms that make up the reactants are found in the products.

• New substances form, but their properties stay the same.

• New substances do not always form.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A ____________________________ can be determined by observing whether a substance can change into a different substance.

• chemical property

• physical property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When the atoms of a substance are rearranged to create a new substance, a ________________ has taken place.

• chemical reaction

• physical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5