Module: matter and change TOPIC 1 : EXP:1

Explain the structure of the model.

• The model shows that diamond is made up of carbon atoms joined by bonds.

• The model shows that diamond is made up of carbon atoms that are not joined by bonds.

• The model shows that diamond is made up of diamond atoms joined by bonds.

• The model shows that diamond is made up of diamond atoms that are not joined by bonds.

Tags

NGSS.MS-PS1-1

A student is researching the particle arrangements of two different states of water. The student collects information in Table 1: Water in Different States. Some information is missing. Which two statements best complete the table?

• A. Particles in a liquid can move and slide past each other to fill the bottom of a container.

• B. Particles in a liquid spread far apart to fill the container, with no regular arrangement.

• C. Particles in a gas spread far apart to fill the container, with no regular arrangement.

• D. Particles in a gas can move and slide past each other to fill the bottom of a container.

• E. Particles in a liquid are packed tightly together in a container, with a fixed arrangement.

A student modeled the element mercury, which is liquid at room temperature, using marshmallows to represent its atoms. How could the student change the model to show mercury that has become a solid?

• Move the marshmallows farther apart and make their arrangement less regular.

• Add more marshmallows to the model and make them slide and move past each other.

• Move the marshmallows closer together and arrange them in a fixed pattern.

• Keep the marshmallows the same distance apart but make them smaller.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A model of iron is shown. Which of the following statements is true about iron?

• Iron is an atom because it is composed of only one type of matter, which gives it unique properties.

• Iron is an atom because it is composed of more than one type of matter, which gives it unique properties.

• Iron is an element because it is composed of only one type of atom, which is the basic unit of matter.

• Iron is an element because it is composed of more than one type of atom, which is the basic unit of matter.

Tags

NGSS.MS-PS1-1

Several elements have atoms that tend to form pairs, including nitrogen gas (N₂) and hydrogen gas (H₂). If a student makes models of these gases, what are two ways the models will be similar?

• E. Both models will show how different elements bond.

• D. Both models will show larger particles at a small scale.

• A. Both models will have the same type of atoms.

• C. Both models will show tiny particles at a larger scale.

• B. Both models will only contain two atoms each.

Tags

NGSS.MS-PS1-1