Chemistry Basics Quiz

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What is an element?

A substance with variable composition

A substance consisting entirely of one type of atom (correct)

A substance that cannot be broken down by physical means

A substance consisting of different types of atoms

What does density measure?

The amount of mass in a given space (correct)

The weight of an object

The amount of matter in an object

The amount of space an object occupies

If a metal rod has a density of 3.5 g/mL, what would be the density of each half if you were to slice the rod in half?

7 g/mL

Depends on the type of metal

3.5 g/mL (correct)

1.75 g/mL

Why can objects that are the same size have different masses?

Because their materials or substances are different Signup and view all the answers

Do two objects with the same mass always have the same volume?

No, the volume is not related to mass Signup and view all the answers

What is the purpose of the scientific method?

To solve problems Signup and view all the answers

What is the term for the rise in water levels when an object is placed into a container of water?

Water displacement Signup and view all the answers

What is qualitative information?

Information that describes color, odor, shape, or physical appearance Signup and view all the answers

What is quantitative information?

Numerical information Signup and view all the answers

What is the purpose of a graduated cylinder in science?

To find the volume of liquids Signup and view all the answers

What is the meniscus in a graduated cylinder?

The curve at the surface of the liquid Signup and view all the answers

Why do scientists use the metric system?

Because almost all countries use it Signup and view all the answers

What is the primary focus of chemistry?

The study of matter Signup and view all the answers

What is a pure substance?

A substance where all of the particles are identical Signup and view all the answers

Which of the following is NOT a state of matter?

Vacuum Signup and view all the answers

What are atoms?

The smallest unit of an element that retains its chemical properties Signup and view all the answers

What does the nucleus of an atom contain?

Protons and neutrons Signup and view all the answers

What determines the chemical properties of an atom?

The arrangement and number of subatomic particles Signup and view all the answers

What is a molecule?

A chemical structure consisting of at least two atoms bonded together Signup and view all the answers

What is the chemical formula for a molecule of water?

H2O Signup and view all the answers

How are molecules held together?

By chemical bonds Signup and view all the answers

What type of matter is a mixture?

A substance with different types of particles present Signup and view all the answers

Which particles orbit around the nucleus of an atom?

Electrons Signup and view all the answers

Which of the following is a molecule of oxygen?

O2 Signup and view all the answers