Front

What is a chemical reaction?

Back

A process where substances (reactants) change into different substances (products), often involving the formation of new materials.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

Why is washing hands important when you have a cold?

Back

It helps prevent the spread of germs to other people.

Front

What are the three main shapes of bacteria?

Back

1. Rodlike (bacilli) 2. Spherical (cocci) 3. Spiral (spirilla)

Front

What does it mean if an object has a negative charge?

Back

It has more electrons than protons.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is erosion?

Back

The process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water.

Front

What is the water cycle?

Back

The continuous movement of water on, above, and below the surface of the Earth, including processes like evaporation, condensation, and precipitation.

Front

What is a hypothesis?

Back

A proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What is the role of a control in an experiment?

Back

A control is a standard for comparison that helps to ensure that the results of an experiment are valid.