1.1 Vocabulary-week 1

________ is anything that has mass and takes up space.

• Matter

• Energy

• Light

• Sound

________ is a substance that consists of only one type of atom.

• Element

• Compound

• Mixture

• Solution

________ is a representation of a phenomenon, a system, a process, or a solution to an engineering problem that helps people visualize or understand the concept.

• Model

• Equation

• Experiment

• Diagram

A ________ is a molecule that consists of two atoms that are the same.

• diatomic element

• polyatomic ion

• isotope

• compound

A ________ is a substance containing atoms of two or more different elements connected together.

• Compound

• Element

• Mixture

• Molecule

A (a)   is a mixture in which two or more pure substances are evenly mixed.

• homogeneous mixture
• heterogeneous mixture
• compound
• element

________ is another name for a homogeneous mixture.

• Solution

• Suspension

• Colloid

• Emulsion

Match each type of mixture or substance with its correct description.

• A homogeneous mixture of two or more substances.

• compound

• A pure substance made of two or more elements chemically combined.

• solution

• A mixture in which two or more pure substances are not evenly mixed.

• heterogeneous mixture

• A mixture in which substances are evenly mixed and not easily distinguished.

• homogeneous mixture

Which of the following is an example of a heterogeneous mixture?

• Salt water

• Salad

• Air

• Sugar solution

(a)   is a pure substance.

• Iron
• Sand and salt mixture
• Milk
• Soil