Describing Matter

What is the chemical formula for this model?

• N₃H

• NH₃

• 3NH

• HN₃

Tags

NGSS.MS-PS1-1

Suppose you find a website that describes the rusting of a nail as a change to only the physical properties of iron, would that be accurate?

• No, because it is still nail that is made of iron

• Yes, because no new substance was formed

• Yes, because the rust is not a new substance.

• No, because a new substance called rust is formed and that is a change in chemical property

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Examples of a homogenous and a heterogenous mixutre are

• Homogenous: mix nuts

  Heterogenous: mushroom soup

• Homogenous: sugar solution

  Heterogenous: fruit salad

• Homogenous: mixed vegetables

  Heterogenous: bread dough

• Homogenous: cup of coffee

  Heterogenous: fruit juice

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these

What is described in this picture?

• Homogenous mixture

• Heterogenous mixture

• It is both homogenous and heterogenous

• None of these