Science Ch 15 Voc Flashcards Preview

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Flashcards in Science Ch 15 Voc Deck (15)
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1
Q

A type of matter with a fixed composition

A

Substance

2
Q

All the atoms in a substance have the same identity

A

Element

3
Q

A substance in which the atoms of two or more elements are combined in a fixed proportion

A

Compound

4
Q

A mixture in which different materials can be distinguished easily

A

Heterogeneous mixture

5
Q

Contains two or more gases, liquid or solid substances blended evenly throughout

A

Homogeneous mixture

6
Q

A homogenous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container

A

Solution

7
Q

A type of mixture with particles that are larger than those in solutions but not heavy enough to settle out

A

Colloid

8
Q

This scattering of light by colloidal of particles

A

Tyndall effect

9
Q

A heterogenous mixture contains a liquid in which visible particles settle

A

Suspension

10
Q

Any characteristic of a material that you can observe

A

Physical property

11
Q

A change in size, shape, or state of matter

A

Physical change

12
Q

The process for something separating substances in a mixture by evaporating a liquid and recondensing its vapor

A

Distillation

13
Q

A characteristic of a substance that indicates whether it can undergo a certain chemical change

A

Chemical property

14
Q

A change of one substance to another

A

Chemical change

15
Q

The mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change

A

Law of Conservation of Mass