Physical and chemical properties

All substances have properties that we can use to identify them.

• physical

• chemical

Multiple Choice

Anything that has mass and takes up space.

(everything is made of this)

• mass

• matter

• volume

• reflectivity

Multiple Choice

A chemical property describes how matter __________.

• smells

• reacts with another type of matter

• looks under a microscope

• dissolves when made into a solution

Multiple Choice

The way something looks, feels, smells, and tastes are physical properties.

• True

• False

Physical Properties

• do not change the chemical nature of the matter.

• readily observable

• help understand how the substance will behave under various conditions

Examples of physical properties:

• magnetism

• boiling and freezing and melting point

• malleability

• measurable qualities: density, mass, and volume

• viscosity

• size and shape and color

• texture

Multiple Choice

I use rulers, scales and calculators to make these observations.

• Qualitative data

• Quantitative data

Multiple Choice

What are observations made using our five senses called?

• Qualitative data

• Quantitative data

Multiple Choice

The flower is 8 cm tall.

• Qualitative data

• Quantitative data

Multiple Choice

The bearded iris smells sweet.

• Qualitative data

• Quantitative data

Multiple Choice

Qualitative Physical Properties ...

• correspond to the molecular composition of matter

• are related with physical changes of matter

• Both are correct

• None of them

Multiple Choice

Dissolving salt (NaCl) in water is an example of a ___?___ change

• chemical

• physical

Multiple Choice

Changing the size, shape, appearance, or volume of a substance without changing its composition is a ___?___ change

• chemical

• physical

Multiple Choice

Mixing baking soda and vinegar forms bubbles of CO₂ gas.

This is an example of a ___?___ change

• chemical

• physical

Chemical Properties

change the chemical nature of matter and are only seen during a chemical reaction

Examples of Chemical Properties

• combustibility (the energy released when it burns completely)

• reactivity (reacting with other chemicals- may form a precipitate or color change)

• Ph (measure of acidity or alkalinity of a solution)

• flammability (how likely to burn)

Multiple Select

The pH of water is an abiotic factor for aquatic organisms.

Why is acid rain a problem for the organisms?

(click all that apply)

• It gives the water a pH lower than their tolerance.

• It makes the water they live in more acidic.

• It makes the water they live in more alkaline (basic).

• It gives the water a pH higher than their tolerance.

Dropdown

Soil pH is ​

Select answer

Factor that you ​

Select answer

change to grow healthy plants.

Multiple Choice

Substances with a pH of 7 are

• Acidic

• Basic

• Neutral

• Saturated

Multiple Choice

The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H⁺ ions?

• vinegar

• milk

• water

• bleach

Multiple Choice

Pollution causes the pH of rain water fall below 6. What is such type of rain called?

• Acid Rain

• Basic Rain

• High pH Rain

• Purple Rain

Match

Match the following

• higher than 7

• lower than 7

• 7

base

acid

neutral

• base

• acid

• neutral

Explanation Slide...

Anything below 7 is considered an acid; below 6 is definitely an acid.

Explanation Slide...

Remember H+ is another name for an acid. So, another way to ask this would be; which of these is the strongest acid?

Multiple Choice

TRUE or FALSE: "Matter cannot be lost even when a chemical reaction occurs."

• TRUE

• FALSE

Multiple Choice

A new substance is formed during which type of change?

• Physical Change

• Chemical Change

Multiple Choice

Properties that can only be observed or measured by changing the chemical identity of a substance.

• Physical Properties

• Combustible Properties

• Chemical Properties

• Changeable Properties

Multiple Choice

How easily a substance reacts with Oxygen.

• reactivity

• oxidation

• combustibility

• solubility

Multiple Choice

Which of the following is a Chemical Property?

• solubility

• flammability

• viscosity

• melting point

Multiple Choice

Which of the following is a Chemical Property?

• radioactivity

• boiling point

• solubility

• viscosity

Multiple Choice

Which of the following is a Chemical Property?

• viscosity

• melting point

• solubility

• toxicity

Multiple Choice

How easily a substance will set on fire.

• oxidation

• reactivity

• combustibility

• chemical property