Unit 2 Ūnderstanding Matter 2024

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Unit 2 Understanding Matter

Topic 3.0 Chemical Formulas

What is Mass

What are the physical and chemical properties of matter

Chemical Properties

Examples

Matter

Chemical Properties

Examples: rust

The change of chemical composition in a substance. CAN change appearance AND chemical composition

Physical Properties

Examples: melting point, freezing point, density (ice, broken pencil)

CAN change the appearance, It DOES NOT change chemical composition

What are the different types of matter?

They can be PHYSICALLY seperated

Homogeneuous (sugar and water)

Heterogeneous (oil and water)

Mixtures

ONLY can separate them CHEMICALLY

Compounds

Elements

Pure Substances

Solid, liquid, gas and plasma

What are the different States of Matter?

Anything that has mass and a measurable volume

What is Matter?

Category

Cause

Mini Lecture 2.0 What is Density

Should Do's Solve Density word Problems

3. Changing in volumes influence density mass remains constant

2. Describe how changing in mass influences density if volume remains constant

1. Manipulate density equation to solve unknown variable

Should Knows Define Mass, volume and Density

mass = measurement of matter volume

volume = the space matter occupies

density = amount of mass a substance has in a given volume (g/ml )

Topic 2.1 Physical Vs Chemical CHange

Should Do's

1. Describe the difference between physical and chemical changes. 2. Identify metals and nonmetals on the periodic chart.

Should Knows

Define: physical property, chemical

Topic 2.1 Atomic Structure

isotopes are atoms of the same element having different number of neutrons

ions are atoms of the same element having different charges

Both Neutrons and Protons are found in the nucleus

Electrons

Have a NEGATIVE charge

Neurons

Do NOT have a charge

Protons (Atomic Number)

Have a POSITIVE charge

Atoms have two major locations

THE ORBITAL (space around NUCLEUS) - where electrons are

NUCLEUS (center of atom) - Stores protons & neutrons

What is atomic structure?

Topic 2.0 What is Matter?

Subtopic

Vocabulary

Should Do's 1.Distinguish between mass and weight. 2.Apply the law of conservation of matter. 3.Classify matter as an element, compound,homogeneous mixture, or heterogeneous mixturewith regard to its physical state and composition.

Should Knows Define: Matter, mass, weight, homogeneous mixture, heterogeneous mixture