Matter - Chemical /Physical Properties of Matter

Open Ended

Why is it important to distinguish between elements, compounds, and mixtures in the study of matter?

Multiple Choice

Which of the following statements best describes an element?

• A substance made up of different types of atoms.

• A unique and pure substance with atoms having the same number of protons.

• A mixture of two or more substances.

• A substance that can be separated into simpler substances by chemical means.

Multiple Choice

Which of the following best describes a molecule?

• A pure substance made of atoms of two or more elements chemically combined in fixed ratios.

• A physical combination of two or more substances in any proportion.

• A substance that can be separated by physical means.

• A mixture with a uniform composition.

Multiple Select

Which of the following statements are true about compounds?

• Compounds are made of different elements chemically bonded.

• The properties of a compound are the same as the original elements.

• Compounds can only be separated by chemical means.

• Compounds may be present in any proportion.

Open Ended

Explain how chemical bonding changes the properties of the elements involved.

Multiple Choice

Which of the following is a key difference between a mixture and a compound?

• Mixtures can be separated by physical means, while compounds require chemical means.

• Compounds can be present in any proportion, while mixtures have fixed ratios.

• Mixtures are always uniform in composition, while compounds are not.

• Compounds retain the properties of their components, while mixtures do not.

Fill in the Blanks

A heterogeneous mixture looks

throughout.

Multiple Choice

Which example is a homogeneous mixture?

• Trail mix

• Salad

• Tea

• Oil & Vinegar

Multiple Choice

Which of the following best describes a solution?

• A well-mixed homogeneous mixture where a solute is dissolved in a solvent

• A heterogeneous mixture where substances are not evenly distributed

• A mixture of two solids that do not dissolve in each other

• A chemical reaction between two liquids

Multiple Select

Which of the following are examples of physical properties?

• Color

• Shape

• Combustibility

• Density

Fill in the Blanks

The process in which a solid turns into a liquid is called

.

Multiple Choice

Which of the following is NOT a key term associated with chemical changes?

• Elasticity

• Acidity

• Rusting

• Combustibility

Fill in the Blanks

During an endothermic change, energy is

from the surroundings.

Open Ended

After learning about elements, compounds, mixtures, and physical vs. chemical changes, what is one question you still have or something you would like to learn more about?

Multiple Choice

What is one way to determine if a substance is an element?

• Check if it is on the Periodic Table

• See if it can be broken down into simpler substances

• Test if it reacts with water

• Measure its melting point

Multiple Choice

Which of the following best describes an exothermic change?

• A chemical change that releases more thermal energy than it absorbs, making the surroundings feel hot.

• A chemical change that absorbs more thermal energy than it releases, making the surroundings feel cold.

• A physical change that releases energy into its surroundings, making the surroundings feel cold.

• A physical change that absorbs energy from its surroundings, making the surroundings feel hot.