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VocabularyTerms
Elements CompoundsMixtures
& Solutions
Misc.
10
An element that is shiny and that conducts heat and
electricity well.
Metal
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20
When one substance spreads out evenly into another substance.
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Dissolving
30
What is a pure substance?
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A substance in which there is only one type of particle.
40
Cereal and milk, salt, and sodium: which of these is a compound
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Salt
10
What is a metalloid?
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An element that has properties of both metals and nonmetals.
20
Which type of element is dull in appearance and is a poor
conductor of heat and electricity?
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Nonmetal
30
Define an element.
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A substance that cannot be broken down into simpler substances by physical or chemical means.
40
Why are elements classified as metals, nonmetals and
metalliods?
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Because each category of elements have similar properties
10
What type of change occurs when two or more elements combine to form a
compound?
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Chemical change.
20
Name two compounds other than water
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Examples Vinegar, Baking Soda
30
True or False: The elements in a compound keep their
properties?
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False. They undergo a chemical change, meaning their matter changes and they do not keep their properties. Sodium Chloride (salt) is formed by the elements sodium (which reacts violently with water) and chlorine (poisonous gas). When they undergo a chemical change together they create a harmless substance that is safe to eat.
40
What are the two ways to break apart a compound like
water?
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Add heat or electricity
10
What is a mixture?
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A combination of two or more substances that can be separated by physical changes.
2
When a mixture seems to be a single substance. One substance dissolves in
another.
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Solution
30
What is the definition of a solvent?
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Solvent – In a solution, the substance in which the solute is dissolved (water).
40
Which of these lemonade solutions is the most concentrated?
2 scoops and 1400 Ml of water
1 scoops and 500 Ml of water
2 scoops and 1200 Ml of water
Why?
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1 scoops and 500 Ml of water because if you divide the scoops by the amount of water you would get 1 scoop per 500 ml. The second one is 1 scoop per 700 Ml of water. The third is 1 scoop per 600 ml of water.
10
Name which is the compound, which is the element, and which is the mixture
Koolaid salt gold
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Compound -Salt, Element - Gold, Mixture Koolaid
20
A solution in which no more solute will dissolve is called: A. Diluted
B. Solute
C. Saturated
D. mixture
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C Saturated
30
What are 3 ways to increase the rate of dissolving a substance (Hint: Think of
the sugar cube lab).
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1. Mixing
2. Heating
3. Crushing
4 0
Explain how you would separate a mixture of salt,
diatomatious earth, iron filings.
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Use a magnet to get the iron filings out. Then pour water into the diatomatious earth and salt. Use a coffee filter to get the diatomatious earth filtered. Then pour the the remaining salt water into a petri dish to evaporate.