Table of Contents
- 1 What is any material of two or more substances that can be physically separated?
- 2 What substance can be physically separated?
- 3 Can compounds be physically separated?
- 4 When two or more substances are combined so each substance can be separated by physical means the result is a N?
- 5 Is two or more atom an element or compound?
- 6 When two or more materials are combined a mixture is?
What is any material of two or more substances that can be physically separated?
Science Test- Composition of Matter
| A | B |
|---|---|
| substance in which all atoms are alike | element |
| any material made of two or more substances that can be physically separated | mixture |
| the scattering of light by colloidal particles | Tyndall Effect |
| heterogeneous mixture with larger particles that never settle | colloid |
What substance can be physically separated?
Mixtures
Mixtures can be physically separated (filtering, sifting, evaporation). The pure substances that mix keep their own physical and chemical properties—a mixture doesn’t have its own unique properties.
When can something be physically separated into two substances?
Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
What is a substance made of two or more atoms?
molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
Can compounds be physically separated?
A compound is a pure substance composed of two or more different atoms chemically bonded to one another. That means that it can not be separated into its constituents by mechanical or physical means and only can be destroyed by chemical means.
When two or more substances are combined so each substance can be separated by physical means the result is a N?
Science Chapter 17 Test
| A | B |
|---|---|
| When two or more substances are combined so each substance can be separated by physical means, the result is a_________. | mixture |
| A __________ is NOT a mixture | compound |
| The scattering of light by colloids is called________. | The Tyndall Effect |
| _______ is NOT a homogeneous mixture | Permanent-Press Fabric |
Which of the following can be separated into two or more pure substances using a physical method?
Mixtures can be separated into pure substances by physical methods. A pure substance is one with uniform and definite compositions. Pure substances can be divided into two groups – elements and compounds.
What is a substance made of 2 or more elements that are chemically combined in a set ratio?
A substance containing two or more elements chemically combined in a fixed ratio is called a compound. A pure substance can be classified as either…
Is two or more atom an element or compound?
Compounds are made of two or more atoms of different elements, such as water (H2O) and methane (CH4). Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements.
When two or more materials are combined a mixture is?
A mixture is made when two or more substances are combined, but they are not combined chemically. There are two main categories of mixtures: homogeneous mixtures and heterogeneous mixtures. In a homogenous mixture all the substances are evenly distributed throughout the mixture (salt water, air, blood).
What is form when two or more substances are combined?
A mixture is created when two or more different substances are physically combined and can be separated back into its original substances.