7th gr Benchmark 2 practice

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.

Tags

NGSS.MS-PS1-5

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Tags

NGSS.MS-PS1-4

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas. Each state has distinct properties based on the arrangement and energy of its particles.

Tags

NGSS.MS-PS3-4

Front

What is a chemical reaction?

Back

A chemical reaction is a process that involves the transformation of one or more substances into different substances, characterized by the breaking and forming of chemical bonds.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is a substance formed when two or more elements chemically bond together.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number, which displays periodic trends in properties.

Tags

NGSS.HS-PS1-1

Front

What is an acid?

Back

An acid is a substance that donates protons (H⁺ ions) in a solution and has a pH less than 7.

Tags

NGSS.MS-PS1-1

Front

What is a base?

Back

A base is a substance that accepts protons (H⁺ ions) or donates hydroxide ions (OH⁻) in a solution and has a pH greater than 7.

Front

What is the function of cytoplasm in a cell?

Back

Cytoplasm is the jelly-like substance within a cell that contains organelles and is the site for many metabolic processes.

Tags

NGSS.MS-LS1-2

Front

What is a single-celled organism?

Back

A single-celled organism, or unicellular organism, is an organism that consists of only one cell, such as bacteria and protozoa.

Tags

NGSS.MS-LS1-1