Which statement best describes the relationship between elements and compounds?

Elements combine in various ways to form different compounds.

There are an infinite number of elements.

All elements can exist independently without forming compounds.

Compounds are made only of one type of atom.

What is true about the atoms that make up compounds?

They are combined in specific ratios.

They can be mixed in any amount.

They can only come from one element.

They do not affect the properties of the compound.

Why is it important to understand that there are a finite number of elements?

It helps us recognize the diversity of compounds that can be formed.

It implies that elements are unreactive.

It means elements cannot be combined.

It limits the number of compounds to just a few.

Which of the following statements is true about the elements in the periodic table?

They are organized based on their atomic number and properties.

All elements are gases at room temperature.

What is the importance of the unique arrangement of atoms in a compound?

It determines the physical and chemical properties of the compound.

It only affects the color of the compound.

It has no effect on the compound.

It means the compound will always be a solid.

What happens when atoms of different elements combine?

They form new compounds with different properties.

They only produce energy without forming new substances.

They create more atoms of the same element.

They remain unchanged as individual elements.

What role do atoms play in the formation of matter around us?

Atoms combine to form all types of matter, both living and nonliving.

Atoms have no role in matter formation.

Only certain atoms can form living things.

Strength of atoms determines matter size.

Why do compounds have different properties than the elements that make them up?

Compounds have unique arrangements and bonds between atoms.

Compounds only contain one type of atom.

Elements lose their properties when combined.

What defines a chemical compound?

A chemical compound is made up of two or more different types of atoms bonded together.

A chemical compound can only contain metals.

A chemical compound is a physical mixture of elements.

A chemical compound contains only one type of atom.

SC.8.P.8.5-Recognize that there are a finite number of elements and that their atoms combine in a multitude of ways to produce compounds that make up all of the living and nonliving things that we encounter.

PB-SC.8.P.8.5 (L) – Recognize that there are a finite number of elements and that their atoms combine in a multitude of ways to produce compounds that make up all the living thing and nonliving things that we encounter.

Sc.8.p.8.5 Students will be able to: • Recognize that there are a finite number of elements and that their atoms combine in a multitude of ways to produce compounds that make up all the living and nonliving things that we encounter. • Distinguish among mixtures (including solutions) and pure substances. • Recognize that elements are grouped in the periodic table according to similarities of their properties • Recognize that atoms are the smallest unit of an element and they are composed of sub-atomic particles (electrons surrounding a nucleus containing protons and neutrons) • Explain why theories may be modified but are rarely discarded Advanced Benchmarks: • Write chemical formulas for simple covalent (HCl, SO2, CO2, and CH4) and ionic (Na+ + Cl- + NaCl) and molecular (O2, H2O ) compounds. Predict the formulas of ionic compounds based on the number of valence electrons and the charges on the ions (912.P.8.7) • Use the periodic table and electron configuration to determine an element’s number of valence electrons and its chemical and physical properties. Explain how chemical properties depend almost entirely on the configuration of the outer electron shell (912.P.8.5) • Explain that electrons, protons, and neutrons are parts of the atoms and the nuclei of atoms are composed of protons and neutrons, which experience forces of attraction and repulsion consistent with their charges and masses (912.P.8.4)

SC.8.E.5.1 Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this distance.

NEW-SC.8.P.8.5-1. Students will identify the difference between an element and a compound. 2. Students will describe how elements combine in a multitude of ways to produce compounds that make up all living and nonliving things. 3. Students will identify the difference between homogeneous and heterogeneous mixtures. 4. Students will differentiate among pure substances, mixtures, and solutions. 5. Students will recognize that elements are grouped in the periodic table according to similarities of their properties. 6. Students will explain that atoms are the smallest unit of an element and are composed of subatomic particles; electrons, protons, neutrons. 7. Relate the scientific theory of atoms using models. 8. Students know the parts of an atom, their location, and their charge. 9. Students know all matter is composed of atoms. 10. Students will explain why theories may be modified but are rarely discarded

01 - SSA - Physical Science Review (SC.8.P.8.5)

QTR-1-EXAM-SC.8.N.1.1; SC.8.P.8.5; SC.8.P.8.1; SC.8.P.8.8

PB-SC.912.P.8.5-ADV-Relate properties of atoms and their position in the periodic table to the arrangement of their electrons

NEW-SC.8.P.8.1-1. Students will describe the motion of particles in solids, liquids, and/or gases. 2. Students will identify the molecular structure of a solid, liquid, and gas when given a picture. 3. Students distinguish the relationship between the motions of particles as a substance moves from a solid to a liquid to a gas and vice versa. 4. Students will identify the benefits and limitations of the use of scientific models. 5. Students will describe and/or analyze common methods and/or models used in different fields of study. 6. Students will identify the benefits and limitations of the use of scientific models. 7. Students will identify how technology is essential to science.

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