Title: Mix and Match 1st section
1Mix and Match (1st section)
- Match each definition with the correct term.
- Definitions
- 1. the smallest basic unit of matter
- 2. a particle made when two or more atoms combine
- 3. anything that has mass and takes up space
- Terms
- a. matter
- b. volume
- c. atom
- d. weight
- e. molecule
2Unit 1 Matter and Energy
- Chapter 1 Introduction to Matter
- Section 3 Matter combines to form different
substances
3Extra Credit Opportunity
- Find 5 common household items that are compounds
and 5 that are mixtures. - Write a one page paper ( if typed should be
double spaced) that names what they are, and how
the mixtures can be separated. Include your name,
a title, and uses complete sentences.
4Please bring a jar with a lid from home for the
lab on Monday
5Before and After
- BEFORE, you learned
- Matter is made of tiny particles called atoms
- Atoms combine to form molecules
- NOW, you will learn
- How pure matter and mixed matter are different
- How atoms and elements are related
- How atoms form compounds
6pure or mixed matter?
- What do you think the difference is?
- Anything that is pure is only a single substance
- If something is mixed, it has more than one type
of atom or molecule
7Are most of the substances around you pure or
mixed matter?
8What is the difference between apure substance
and a mixed substance?
- A pure substance has only one type ofatom or
molecule, while a mixed substancecontains two or
more differentsubstances.
9Pure or mixed?
Mixed
Mixed
Mixed
10Elements
- An element is a substance that contains only a
single type of atom - It can not be separated into smaller pieces
- Examples?
- Silver, gold, helium
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12What is the smallest possible amount of an
element?
13Why is an element considered to be a pure
substance?
- An element contains only one type of atom.
14Compounds
- A compound is a substance that consists of two or
more different types of atoms bonded together. - Many different things are compounds
- Carbon dioxide
- Table salt
- Sodium and chlorine
- Together these are harmless, although separately
they are poisonous
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16What is the relationship between atoms and a
compound?
- A compound is made up of two or more different
types of atoms bonded together.
17Elements and Compounds
- Based on the diagram, what does the gold in the
photograph consist of? - Based on the diagram, what does the dry ice
consist of? - Is dry ice a pure substance? Why?
- atoms of gold
- molecules of carbon dioxide, which consist of one
carbon atom and two oxygen atoms - Yes it contains only one kind of molecule.
18Mixtures
- A mixture is a combination of different
substances that remain the same individual
substances and can be separated by physical
means. - Examples
- Seawater (water, salt, other minerals)
- Blood (blood, cells, plasma also another
mixture)
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20Comparing mixtures and compounds
- Compounds
- Compounds are new substances formed by atoms that
bond together. - Compounds can be separated only by breaking the
bonds between atoms. - The proportions of different substances in a
compound are fixed because the type and number of
atoms that make up a basic unit of the compound
are always the same.
- Mixtures
- The substances in mixtures remain the same
substances. - Mixtures can be separated by physical means.
- The proportions of different substances in a
mixture can vary throughout the mixture or from
mixture to mixture.
21If two substances bond together, is the new
substance a compound or a mixture?
22How is a mixture different from a compound?
- A mixture combines different substances that
remain those substances. - A compound has different properties than the
individual elements that make it up.
23Evenly mixed
- Some mixtures are easy to see, some arent
- When substances are evenly spread throughout a
mixture, you cannot tell one part of the mixture
from another part. - Homogenous mixture
- Typically, these are mixtures that are hard to
see, like sugar dissolved in water
24Unevenly mixed
- There are many mixtures, such as soil, that have
different properties in different areas of the
mixture - Heterogenous mixture
- Individual pieces can be seen and separated
- A bowl of fruit!
251.1.3 Questions (assignments)
- KEY CONCEPTS
- 1. What is the difference between pure and mixed
matter? - 2. How are atoms and elements related?
- 3. How are compounds different from mixtures?
- CRITICAL THINKING
- 4. Infer What can you infer about the size of
sugar particles that are dissolved in a mixture
of sugar and water? - 5. Infer Why is it easier to remove the ice
cubes from cold lemonade than it is to remove the
sugar? - CHALLENGE
- 6. Apply A unit of sulfuric acid is a molecule
of 2 atoms of hydrogen, 1 atom of sulfur, and 4
atoms of oxygen. How many of each type of atom
are there in 2 molecules of sulfuric acid?