7 Science Final

Front

What are the main components of air?

Back

The main components of air are nitrogen (78%), oxygen (21%), argon (0.93%), and carbon dioxide (0.04%).

Front

Which element is a noble gas and similar to Helium?

Back

Neon (Ne) is a noble gas that has similar properties to Helium (He).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that can be separated using physical properties.

Front

Which element is classified as a non-metal?

Back

Carbon (C) is classified as a non-metal.

Front

What is the primary function of the Earth's atmosphere?

Back

The Earth's atmosphere helps to regulate the temperature on Earth.

Front

What is the definition of a chemical bond?

Back

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.