Matter and Its Interactions

___________ are characteristics and qualities of a substance that identify and describe it.

• Variables

• Properties

• Controls

• Matter

Tags

NGSS.MS-PS1-2

What does it mean to dissolve something?

• To chemically change the color of a substance

• To physically change the color of a substance

• To mix substances together to form a solution

A particular kind of matter with uniform properties is called a _________.

• substance

• matter

• interaction

• properties

What is a CLOSED system?

• A system that allows matter/energy to enter and leave.

• A system that does NOT allow matter/energy to enter or leave.

What is an open system?

• A system that allows matter/energy to enter and leave.

• A system that does NOT allow matter/energy to enter and leave.

Which answer BEST fits the law of conservation of mass?

• During a chemical reaction nothing is lost or gained. What is present in the reactants must be present in the products.

• All equations can be equals

• Atoms are the same and can not be destroyed

• Matter is on both sides of the products and reactants. You should not lose things

Tags

NGSS.MS-PS1-5

The diagram below represents two atoms of hydrogen that combine chemically with one atom of oxygen to form a water molecule. Water is an example of

• A compound

• A mixture

• A solution

• An element

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Occurs when one or more substances change to produce one or more different substances

• Chemical reaction

• Chemical property

• Physical property

• Pure Substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many total molecules are present on the reactants side of the equation?

• 31

• 18

• 16

• 2

Tags

NGSS.MS-PS1-2

How many total molecules on the side of the products in the chemical equation?

• 12

• 24

• 36

• 48

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5