Measuring Matter Flashcards by Moyo Ogunkoya

What is the metric system?

Decimal measuring system based on the meter, liter, gram, second and degree as units of length, capacity (volume), mass, time, and temperature. It builds units using a basic unit and a set of prefixes.

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1 m to ___cm

100 cm

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320 m = _____cm

32,000 cm

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4,500 mg = _____g

4.5 g

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5g = _____mg

5,000 mg

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4,500 mL = _____L

4.5 L

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2,000 mg = ____ g

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5L = ____ mL

5,000 mL

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16cm = _____mm

160 mm

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104km = _______m

104,000 m

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198g = ____kg

0.198 kg

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2,500 m = ____km

2.5 km

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75 mL = _____L

0.075 L

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Common Conversions: 
1 km = \_\_\_\_m 
1 m = \_\_\_\_\_cm
1 m = \_\_\_\_\_\_mm
1 cm = \_\_\_\_ mm

1 km = 1,000 m
1 m = 100 cm
1 m = 1,000 mm
1 cm = 10 mm

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100 cm = ____m

1 m

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47 mm = ___cm

4.7 cm

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12.4 km = ____m

12,400 m

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453 g = ____kg

0.453 kg

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34 m = ____cm

3,400 cm

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1cm = ____mm

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10 mm

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50 g = ____mg

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50,000 mg

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9.08L = _____mL

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9.080 mL

What is a triple-beam balance?

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Instrument used to measure the mass of an object.

What is mass?

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The measure of how much matter is in an object

What is weight?

Measure of the force of gravity on an object.

What is volume?

The amount of space matter (solid, liquid, and gas) occupies

How to find the value of the measuring line (scale) in a graduated cylinder?

1. Subtract two neighboring numbers on the graduated cylinder. 2. Count the lines between the two numbers (including the last numbers line in your total.) 3. Divide the answer for step 1 by step 2

What is Water Displacement?

Technique used to measure the volume of objects by calculating how much water the object displaces, or pushes aside when it is put in a sample of water. You determine the volume of an object by subtracting the volume of the water without the object from the new measurement of water volume with the object.

What is density?

Measurement of how much mass is contained in a given volume. To calculate: D = M/V Units: g/cm^3 or g/mL Density of water is 1.0 g/mL.

The mass of copper is 145.8g and the volume is 15.625mL. What is the density? (g/cm^3)

9.3 g/cm^3

The mass of aluminum is 44.4g and the volume is 15.625 mL. What is the density? (g/cm^3)

2.8 g/cm^3

What is the density of a substance with a mass of 75g and a volume of 25mL? Show formula: Substitute #'s into the Formula: Answer (remember correct units):

``` D = M/V D = 75/25 A = 3 g/mL ```

A small block of wood floats on water. It has a volume of 50 cubic cm and a mass of 40 g. What is the density of the wood?

A = 0.8 g/cm^3 | If it is less than 1.0 g/mL because that is the density of water it is correct.

What is the density of a cube that has a mass of 25 g and a volume of 29.4 cubic cm?

A = 0.8503 = 0.9 g/cm^3

A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g. What is the density of the wood? Will it float on water? Explain.

D = 1.11 g/cm^3 The piece of wood would not float. The density of water is 1.0 g/mL and the density of wood is more than that (1.0 < 1.11) and therefore would not float.

A cup of "gold" colored metal beads was measured to have a mass of 425 grams. Using water displacement the volume of the beads was calculated to be 47.7 cubic cm. Given the following densities of common metals, identify what metal the beads are composed of. Gold: 19.4 g/cm^3 Copper: 8.9 g/cm^3 Lead: 11.3 g/cm^3

D = 8.9 g/cm^3 | The beads are copper

An object has a density of 5 g/mL and a mass of 50 g. What is the volume?

``` V = M/D V = 10 mL ```

A sample of copper occupies a volume of 100 mL. The density of the piece is 8.92 mL. What is the mass of the sample of copper?

V * D = M | M = 892

Which has greater density: A whole Hershey's bar or half of a Hershey's bar? Explain.

They both have the same density. Density measures the amount of matter in a given volume. It is not effected by how big the object is.

While trying to determine the density of an object in a lab, a group of students used a triple beam balance to measure the mass of an object. The largest rider reads 100, the medium rider reads 30 and the smallest rider reads 1.8. The students then place the object into a graduated cylinder and observe the water levels rise from 50mL to 88 mL. Calculate the density of the object.

D = 3.468 = 3.47 g/mL

Solve and if you were to put these into a graduated cylinder how would it be sorted from bottom up? Orange juice: Mass = 18g. Density = 6 g/mL Volume = ____ Milk: Mass = 8g Volume = 2 mL Density = ____ Water: Mass = 15 g. Volume = 15 mL Density = _____ Corn oil: Volume: 6 mL Density = 6 g/mL. Mass = ______ Molasses: Mass = 21g Density = 7 g/mL. Volume = ______ Soy sauce: Volume = 7.5 mL Density = 2 g/mL. Mass= _____

Orange juice: Mass = 18g. Density = 6 g/mL Volume = 3 mL Milk: Mass = 8g Volume = 2 mL Density = 4 g/mL Water: Mass = 15 g. Volume = 15 mL Density = 1 g/mL Corn oil: Volume: 6 mL Density = 6 g/mL. Mass = 30g Molasses: Mass = 21g Density = 7 g/mL. Volume = 3 mL Soy sauce: Volume = 7.5 mL Density = 2 g/mL. Mass= 15 g Order is down up 1. Molasses 2. Orange juice 3. Corn oil 4. Milk 5. Soy sauce 6. Water

What is the density of mercury if 270 g of mercury occupies a volume of 100 mL?

2.7 g/mL

A block of wood, 3 cm on each side, has a mass of 27g. What is the density of the block?

1 g/cm^3

An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2mL. The height of the water rose to 7 mL. If the mass of the stone was 25g, what was its density?

5 g/mL

A 10 cm^3 sample of copper has a mass of 89.6g. What is the density of copper?

8.96 g/cm^3

The cork has a mass of 0.8 g and a volume of 2 cm^3. What is the density? Will it float or sink?

0.4 g/cm^3 | Float

The rubber stopper has a mass of 15g and a volume of 12 cm^3. What is the density? Will it float or sink?

1.25 g/cm^3 | Sink

``` Mystery metal A has a mass of 29.1 g and a volume of 4 cm^3. What is the density? Will it float or sink? Which of these metals is it? Aluminium: 2.71 g/cm^3 Gold: 19.32 g/cm^3 Lead: 11.34 g/cm^3 Nickel: 8.8 g/cm^3 Zinc: 7.14 g/cm^3 Copper: 8.93 g/cm^3 ```

7.275 g/cm^3 Sink Zinc

``` Mystery metal B has a mass of 18 g and a volume of 6 cm^3. What is the density? Will it float or sink? Which of these metals is it? Aluminium: 2.71 g/cm^3 Gold: 19.32 g/cm^3 Lead: 11.34 g/cm^3 Nickel: 8.8 g/cm^3 Zinc: 7.14 g/cm^3 Copper: 8.93 g/cm^3 ```

3 g/cm^3 Sink Aluminum

Measuring Matter Flashcards

(49 cards)