Q2 Benchmark Review

Q2 Benchmark Review

Week 19 - Wednesday and Thursday

7.P.2 The student will demonstrate an understanding of the structure and properties of matter and that matter is conserved as it undergoes changes

Have you ever heard this before?

Open Ended

Describe an atom's structure.

Open Ended

What is meant by the phrase, "matter is conserved as it undergoes change"?

7.P.2A.1 Develop and use simple atomic models to illustrate the components of elements (including the relative position and charge of protons, neutrons, and electrons).

Multiple Choice

__ have a positive charge. __ have no charge and __ have a negative charge.

• electrons-protons-neutrons

• neutrons-electron-protons

• protons-neutrons-electrons

• protons-electrons-neutrons

7.P.2A.2 Obtain and use information about elements (including chemical symbol, atomic number, atomic mass, and group or family) to describe the organization of the periodic table.

7.P.2A.4 Construct explanations for how compounds are classified as ionic (metal bonded to nonmetal) or covalent (nonmetals bonded together) using chemical formulas.

Multiple Choice

Carbon Dioxide is composed of on carbon atom and 2 oxygen atoms.If covalent bonds form when nonmetals combine and ionic bonds form when metals combine with nonmetals, what type of bond does carbon dioxide represent?

• a covalent bond

• a sublimation bond

• an ionic bond

• a deposition bond

7.P.2B.5 Develop and use models to explain how chemical reactions are supported by the law of conservation of matter.

7.P.2A.3: Analyze and interpret data to describe matter as pure substances (elements or compounds) or mixtures (heterogeneous or homogeneous) based on composition.

Multiple Choice

Rice and beans is an excellent meal filled with plenty of carbohydrates and proteins for energy. What category would you put rice and beans in?

• compound

• homogeneous mixture

• heterogeneous mixture

• solution

7.P.2B.1 Analyze and interpret data to describe substances using physical properties (including state, boiling/melting point, density, conductivity, color, hardness, and magnetic properties) and chemical properties (the ability to burn or rust).

Multiple Choice

The ability to rust or burn is a ___.

• physical property

• chemical property

Multiple Choice

All of the following are physical properties except

• state

• melting point/freezing point

• density

• rusting

7.P.2B.2 Use mathematical and computational thinking to describe the relationship between the mass, volume, and density of a given substance.

D = M / V

Multiple Choice

A glass marble has a volume of 5 cm3 and a mass of 13 g. What is the density of the marble?

• 2.6 g/cm3

• 0.26 g/cm3

• 260 g/cm3

• 65g/cm3

7.P.2B.3 Analyze and interpret data (pH levels and properties) to classify solutions as acids or bases.

Acids have a pH < 7.

Bases have a pH > 7.

Neutrals have a pH = 7 (pure water)

7.P.2B.4: Analyze and interpret data to classify physical and chemical changes.

Multiple Select

Which properties are observed when one substance interacts with another substance resulting in a chemical change? Choose all that apply

• Boiling

• Burning

• Melting

• Rusting

7.P.2B.5: Analyze and interpret data to explain how chemical reactions support the law of conservation of matter.

Explain the law of conservation of matter.

Multiple Choice

Which statement about the law of conservation of matter is true?

• The mass of the products can be less than the mass of the reactants.

• The mass of the products must be equal to the mass of the reactants.

• The mass of the final products can be more than the mass of the reactants.

• The mass of the reactants must be more than the mass of the products.