Podcast
Questions and Answers
Which of the following mixtures is difficult to separate into its constituent parts?
Which of the following mixtures is difficult to separate into its constituent parts?
- Chocolate milk (correct)
- Nuts
- Vegetable salad
- Fruit salad
What type of change occurs when dough is baked?
What type of change occurs when dough is baked?
- Physical and chemical change
- Physical change
- Chemical change (correct)
- No change
What happens when an iron nail is left in humid air?
What happens when an iron nail is left in humid air?
- It rusts (correct)
- It evaporates in the air
- Its size increases
- It melts and becomes liquid
Which of the following is a good example of a chemical change?
Which of the following is a good example of a chemical change?
Which change does NOT produce a new substance?
Which change does NOT produce a new substance?
Which of the following indicates that a chemical change has occurred?
Which of the following indicates that a chemical change has occurred?
Sugar granules dissolve faster in water if...
Sugar granules dissolve faster in water if...
What is the best method to separate plastic paper clips from iron paper clips?
What is the best method to separate plastic paper clips from iron paper clips?
Which property describes the amount of solute in a solvent?
Which property describes the amount of solute in a solvent?
What is produced when two or more substances are mixed while each retains its own properties?
What is produced when two or more substances are mixed while each retains its own properties?
Which property is measured by a metric ruler?
Which property is measured by a metric ruler?
What is the appropriate unit for measuring volume?
What is the appropriate unit for measuring volume?
Which state of matter has a fixed volume and a fixed shape?
Which state of matter has a fixed volume and a fixed shape?
What can be measured using a two-pan balance?
What can be measured using a two-pan balance?
Which of the following materials are specifically attracted to a magnet?
Which of the following materials are specifically attracted to a magnet?
Which substance spreads to fill the entire container it is placed in?
Which substance spreads to fill the entire container it is placed in?
Why are electrical wires made of copper?
Why are electrical wires made of copper?
What small building blocks are matter made of?
What small building blocks are matter made of?
Approximately how many elements have scientists discovered?
Approximately how many elements have scientists discovered?
Which of the following consists of two elements?
Which of the following consists of two elements?
Flashcards
Easily Separable Mixture
Easily Separable Mixture
A mixture where components are easily separable.
Physical Change
Physical Change
Change in size or appearance, but no new substance is formed.
Rusting
Rusting
A process where iron reacts with oxygen and moisture.
Chemical Change
Chemical Change
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Evidence of Chemical Change
Evidence of Chemical Change
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Dissolving Sugar Faster
Dissolving Sugar Faster
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Magnetic Separation
Magnetic Separation
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Concentration
Concentration
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Mixture
Mixture
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Metric Ruler
Metric Ruler
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Volume
Volume
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Solid State
Solid State
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Double-Pan Balance
Double-Pan Balance
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High Electrical Conductivity
High Electrical Conductivity
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Small Building Units of substance
Small Building Units of substance
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Elements
Elements
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Made of Two Elements
Made of Two Elements
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Matter
Matter
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Study Notes
- Mixtures where components are easily separated are fruit salads, while those not easily separated include chocolate milk.
- Dough changes after baking.
- A nail rusts and increases in size when left in humid air.
- A good example of a chemical change is burning paper.
- A mechanical change does not produce a new substance.
- Evidence of chemical change includes a change in color.
- Sugar dissolves faster in water, if the solution is heated and more solute is added.
- Paper clips can be separated from iron filings by using a magnet.
- Concentration is a property that describes the amount of solute in a substance.
- Mixing two or more substances while retaining the properties of each substance produces a mixture.
- A metric tape measures length.
- Liters are a suitable unit for measuring volume.
- Solids have a definite shape and volume.
- Mass can be measured using a two-pan balance.
- Magnets attract certain types of materials like iron and steel.
- A substance spreads to fill a container and is dissolved in water.
- Copper is a substance used to make electrical wires, because it is a good conductor.
- Matter is made up of small building units called elements.
- Scientists have discovered 118 elements.
- There are materials made of two elements, such as water.
- Anything with mass and volume is called matter.
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