Solids, Liquids, Gases, Acids, Bases, Salts

Alex wants to know if Sodium hydroxide, a compound commonly found in drain cleaners, is an acid or a base.  He measures it with pH paper and determines it has a pH of 13.  How would Alex describe the results?

• slightly basic

• slightly acidic

• highly basic

• highly acidic

Tags

NGSS.MS-PS1-2

Tyson draws a model to show how the particles in a liquid appear. 

Which model (or models) could be Tyson’s drawing of particles in a liquid?

• model 1

• model 3

• model 1 and model 2

• model 1 and model 3

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Jada and Brian are organizing the information they learned about solids, liquids, and gases. They made a Venn diagram. Now they need to fill it in.

What should Jada and Brian write where all of the states overlap at position 7?

• Particles are constantly moving.

• They do not take shape of container.

• Particles are spaced far apart

• Shape depends on the container

Tags

NGSS.MS-PS1-4

Raul and Bonnie are trying to classify several objects that they found during a field trip to the beach. They collected a sample of seawater, a piece of driftwood, and several smooth pebbles.

What property does the driftwood share with the pebbles that it does not share with the water?

• Its particles move freely in all directions.

• Its particles vibrate, but are locked in place

• Its volume depends upon its container

• Its volume will change in different containers

In which state of matter are the particles able to move around one another?

• gases only

• liquids only

• gases and liquids only

• liquids and solids only

Tags

NGSS.MS-PS1-4

In which state of matter are the particles able to move around one another?

• plasma

• liquid

• solid

• gas

Tags

NGSS.MS-PS1-4

A substance placed into an open container at room temperature takes the shape of the container while its volume remains constant. What is the state of matter of this substance? 

• gas

• solid

• liquid

• plasma

Tags

NGSS.MS-PS1-4

One similarity between a small, solid sample of aluminum and a large, liquid sample of aluminum is that both samples have 

• a definite shape

• A definite volume 

• The same amount of atoms 

• The same amount of energy 

When ice begins to melt at 0°C, water molecules 

• begin to lose some of their atomic mass. 

• break apart into individual water atoms. 

• move more freely in relation to each other. 

• release heat to the surrounding atmosphere. 

Tags

NGSS.MS-PS1-4

The boiling point of nitrogen is –196°C. What states of matter are involved when nitrogen boils? 

• Solid to gas 

• Liquid to gas 

• Liquid to solid 

• Gas to liquid 

Tags

NGSS.MS-PS1-4