Science Density Questions

How do you find Density?

D=Mass(gram)/Volume(milliliter)

What is water displacement?

Technique used to find the volume of an irregular shaped object

What is the definition of Characteristic Property?

An indicator that helps you identify a substance

What is Characteristic Property?

An indicator that helps you identify a substance: density, boiling and melting point.

How do you find the Density of liquids?

A)Flat Surface B)Eye Level C)Look at the bottom of the Meniscus

Weight vs Mass

1) Mass is a measurement of the amount of matter something contains, while Weight is the measurement of the pull of gravity on an object. 2) Mass is measured by using a balance comparing a known amount of matter to an unknown amount of matter. Weight is measured on a scale. 3) The Mass of an object doesn't change when an object's location changes. Weight, on the other hand does change with location.

What is the density of water?

1g/mL

If 1 cm3 of water =

1mL of water. This means 7cm3 of water = 7mL water

What is Density?

A characteristic property of matter. It represents mass per unit of volume

Why did you get different densities for all of the substances in Lab 2?

Because of the materials the objects were made out of

What is Matter?

Everything in the universe that has mass and volume

How do you do Water Displacement?

Fill a beaker or graduated cylinder with enough liquid or water to completely immerse a object in. Record the baseline initial measurement. Drop the object in. Record the final measurement.

What units of measurement does an Electric Balance use?

Grams

When finding the density of irregular shaped objects, what are the next 2 steps after you pour water into the graduated cylinder?

Look at the mensicus eye level

What unit of measurement does Mass use?

Mass unit=grams (Electric Balance)

What name is given to the to the curve of the water in a graduated cylinder?

Meniscus

What unit of measurement does Volume use?

Volume unit=Milliliter

When do you use the water displacement technique?

When trying to find the density of an irregular shaped object

How do I know when to use cm3 and mL for volume?

When your trying to find density

Chemical Property

any of a material's properties that becomes evident during a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.

Physical Property

any property that is measurable whose value describes a state of a physical system.

What units are used for the density of a regular shaped object?

g/cm3

What units are used for density of liquids?

g/mL

What is The Formula For Density?

mass/volume= Density

Radiation

the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

Convection

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Conduction

the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.