Sc 4 P 12 2

Protons are small, positively-charged atomic particles

• True

• False

Kyle wanted to see which gum had the most sugar. He chose four different brands of gum. He weighed each piece. Then he chewed each piece for 10 minutes. After that, he let the gum dry and weighed it again. He recorded his data in the table below. What is the independent variable in Kyle's experiment?

• the weight of the final dried gum

• the time chewed

• the change in weight of the gum

• the brand of gum

The period table of the elements is a tool used by scientists.

• true

• false

The __________ and _________ make up the majority of an atoms atomic mass.

• protons and electrons

• electrons and neutrons

• protons and neutrons

A diffraction grating can be used to separate white light. When white light is separated by a diffraction grating, it is separated into __________.

• various colors of the visible spectrum

• violet light

• several different speeds of lights

• red, green, and blue light only

Tags

NGSS.HS-PS4-5

What does a wave carry?

• boats

• matter

• energy

• water

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Why can electromagnetic radiation travel through the vacuum of space?

• They require a medium.

• They do not require a medium.

Sarah is completing a lab in which she is required to identify an unknown substance. She records several observations and measurements of the substance. Which of the following properties will be most helpful to Sarah in making a correct identification?

• density

• volume

• mass

• weight

The element silver has both physical and chemical properties, some of which do not change when the size of the sample changes. Which of these choices is a physical property that does not change when the size of the sample changes?

• mass

• volume

• density

• weight

If Troy has a 4 cm³ cube of each of these metals, which cube will have the greatest mass?

• brass

• gold

• iron

• lead