How Can Substances Be Identified?

Which of the following is a property that you can see?

• color

• brittleness

• hardness

• all the choices

The property REFLECTIVITY describes how

• easily a material can get scratched.

• much light bounces off a material.

• difficult it is to shape an object.

• all of the choices

Tags

NGSS.MS-PS4-2

The difference between copper and plastic this that copper has a much higher

• brittleness

• solubility

• reflectivity

• electrical conductivity

Tags

NGSS.MS-PS2-3

Which of the following properties is a example of a substance changing into a new substance?

• wood that is burned

• gold that is scratched

• iron pyrite that is broken

• sugar that is dissolved

Tags

NGSS.MS-PS1-2

The 4 properties that you can easily SEE are

• conductivity, reflectivity, hardness, and solubility

• brittleness, hardness, conductivity, and color

• hardness, color, brittleness, and reflectivity.

• color, reflectivity, solubility, and brittleness

How can you test the hardness of a material?

• bend it with your hands

• scratch it with a diamond

• flatten it with a hammer

• dissolve it in a substance

A substance’s _____________ is whether it can be shaped/bent or if it will break easily when you try to bend it.

• hardness

• conductivity

• brittleness

• reflectivity

 __________ materials tend to be more reflective than other materials.

• pale and metal 

• dark and metal

• pale and plastic

• dark and plastic

Tags

NGSS.MS-PS4-2

Solubility depends on

• the substance being dissolved and not the substance it is dissolved in 

• not the substance being dissolved but the substance it is dissolved in.

• the substance being dissolved and the substance it is dissolved in.

• not the substance being dissolved and not the substance it is dissolved in.

Plastic usually covers power cords because

• plastic has a low thermal conductivity.

• plastic has low electrical conductivity

• plastic has a high thermal conductivity. 

• plastic has a high electrical conductivity.

Tags

NGSS.MS-PS2-3