Physical and Chemical Properties of Matter

If an object has a mass of 110 g and a volume of 8 mL what would be its density? (round to the nearest tenth)

13.8g/mL

If an object has the mass of 192g and the volume of 32mL what would be its density?

6g/mL

mass

A measure of how much matter is present in a substance

How do mixtures differ from pure substances?

A pure substance is an element or compound (elements chemically combined) with definite composition and properties.

How do mixtures differ from pure substances?

A pure substance is an element or compound (elements chemically combined) with definite composition and properties. Mixtures are two substances physically combined.

Why after evaporating a liquid a white powder is left behind is not a pure substance?

Because after evaporating a substance was left behind showing you mixed two substances together

Why after mixing two substances and leaving the liquid to settle, no substance settled is NOT a pure substance?

Because even though no substance settles you still physically combined two substances

Why after mixing two substances and leaving the liquid to settle, some of the substance settles on the bottom is NOT a pure substance?

Because you PHYSICALLY mixed two substances

Compare and contrast physical and chemical properties of matter.

Both physical and chemical properties of matter can be used to identify a substance. Physical properties can be observed without changing the substance, however, chemical properties can only be observed when the substance is undergoing a chemical change.

Physical properties

Characteristic that can be observed or measured without changing the substance

Chemical property

Characteristic that can only be observed or measured when atoms of matter rearrange during a chemical change

What's the formula for density?

D= m/v

Identify at least three chemical properties of matter.

Flammability, Corrosion, Oxidation, Reactivity with water

bulk quantities

Large quantities

Exactly forty milliliters of water is measured out in a graduated cylinder. An object is submerged in the water. The level of the water rises to 63 milliliters. When taking the mass of the object on a triple-beam balance the three weights on the beams read: 100, 30, and 4.2.

Mass = 100 + 30 + 4.2 = 134.2g 63mL - 40mL = 23mL 134.2g/23mL= 5.83g/mL

What is the difference between mass and weight?

Mass is the amount of matter in a material, while weight is a measure of how the force of gravity acts upon that mass.

If an object has a density of 1.15g/mL would it float or sink in water? Why?

Sink because its density is greater than water's which is 1 g/mL

Identify at least three physical properties of matter.

State of matter, Color, Melting point, boiling point, Odor, Density, conductivity

chemical reaction

The process by which one or more substances change to produce one or more different substances

Identify if following is physical or chemical property: A banana turns brown after a few weeks on the counter:

chemical

Identify if following is physical or chemical property: Mix two substances and bubbles form:

chemical

Identify if the following is a physical or chemical property: A banana turns brown after a few weeks on the counter:

chemical

Identify if the following is a physical or chemical property: Mix two substances and bubbles form:

chemical

intensive physical property

is a bulk property and does not depend on the amount of matter.

extensive physical property

is proportional to the amount of material.

solubility

is the ability of a substance (the solute), to mix into a liquid (the solvent).

Density

is the amount of mass per unit of volume.

An object is a regular, rectangular, and solid with dimensions of 5.0 cm by 4.0 cm by 3.0 cm. It has a mass of 30.0 grams.

mass= 30 g 5 x 4 x 3 = 60 ㎤ 30g/60㎤ = 0.5g/㎤

Identify if following is physical or chemical property: Butter melting:

physical

Identify if following is physical or chemical property: Heating a liquid and measuring the temperature:

physical

Identify if following is physical or chemical property: Ice turns into a liquid: physical

physical

Identify if the following is a physical or chemical property: Heating a liquid and measuring the temperature:

physical

Identify if the following is a physical or chemical property: Ice turns into a liquid:

physical

Identify if the following is a physical or chemical property: melting of butter

physical

Each pure substance has characteristic ____________ and ____________ properties that can be used to describe it. .

physical and chemical

Define properties:

physical and chemical characteristics of matter used to describe or identify a substance

When butter melts, the chemical properties of the substance are ____________.

the same