IQWST Grade 6 Unit 2 Introduction to Chemistry

An element is

• the smallest particle of an element that is still that element.

• a characteristic of a substance or element that is always true.

• made up of the same type of atom all the way through.

• something that is made up of either one type of atom or one type of molecule all the way through.

• a particle made up of more than one atom.

Tags

NGSS.MS-PS1-1

An atom is

• the smallest particle of an element that is still that element.

• a characteristic of a substance or element that is always true.

• made up of the same type of atom all the way through.

• something that is made up of either one type of atom or one type of molecule all the way through.

• a particle made up of more than one atom.

Tags

NGSS.MS-PS1-1

A molecule is

• the smallest particle of an element that is still that element.

• a characteristic of a substance or element that is always true.

• made up of the same type of atom all the way through.

• something that is made up of either one type of atom or one type of molecule all the way through.

• a particle made up of more than one atom.

Tags

NGSS.MS-PS1-1

A property is

• the smallest particle of an element that is still that element.

• a characteristic of a substance or element that is always true.

• made up of the same type of atom all the way through.

• something that is made up of either one type of atom or one type of molecule all the way through.

• a particle made up of more than one atom.

Tags

NGSS.MS-PS1-2

A substance is

• the smallest particle of an element that is still that element.

• a characteristic of a substance or element that is always true.

• made up of the same type of atom all the way through.

• something that is made up of either one type of atom or one type of molecule all the way through.

• a particle made up of more than one atom.

Tags

NGSS.MS-PS1-1

If you could use a powerful microscope to see the particles in a gas, what would you see between the particles?

• more particles

• air

• empty space

• liquid

Which of the following is true about odors?

• All odors are made of particles.

• Odors can be detected.

• Odors move in all directions.

• All of the above.

What happens to the molecules in a substance that changes from a liquid to a solid?

• The molecules shrink.

• The molecules slow down.

• The molecules expand.

• The molecules speed up.

Tags

NGSS.MS-PS1-4

A ball made of an unknown substance is a solid at room temperature. A block made of a different substance is also a solid at room temperature. Their melting points would be _______.

• the same because they are both solids at room temperature

• different because they have different shapes

• the same because they are made of the same types of atoms

• different because they are made up of different molecules

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Oxygen, hydrogen, and water are substances. Which of these substances are elements? [Select all that apply.]

• oxygen

• hydrogen

• water

• none of these

Tags

NGSS.MS-PS1-1