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Matter Unit Scientific Notation

Last updated over 1 year ago

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What happens to a substance during a physical change?

It changes into a completely new substance

It changes form, not composition

Its atoms rearrange

It undergoes a chemical change

Which of these is an example of a physical change?

Burning Wood

Digesting Food

Melting Ice

Rusting of Iron

How would you best describe paper tearing: a physical or chemical change?

No change at all

Physical change

Both physical and chemical change

Chemical change

Why can physical changes be reversed?

Because the chemical makeup of the substance stays the same

Because physical changes include only temporary physical modifications

Because no new substances are formed

Because it's just an illusion

Which of the following is a chemical change?

Melting ice

Boiling eggs

Evaporating water

Burning wood

What happens to atoms during a chemical change?

They're destroyed

Their number increases

They physically travel

They are rearranged into new substances

Which of the following is not a sign of a chemical change?

Change in shape

Change in color

Temperature change

Gas production

Why is digestion in humans considered a chemical change?

Food is broken down into new substances

New molecules are created

It involves physical movements

Energy is released

What is the SI unit for measuring temperature?

Degrees

Fahrenheit

Celsius

Kelvin

Which of the following is the SI unit for amount of substance?

Liter

Meter

Mole

Gram

What is the SI unit for time?

Hour

Minute

Day

Second

What is the metric prefix for 1,000?

Kilo

Mega

Micro

Milli

What metric prefix represents 10^-6?

Nano

Micro

Kilo

Mega

If a measurement is given in centimeters, which prefix is being used?

Deci

Deca

Centi

Kilo

Which prefix would be used to represent a billionth?

Mega

Milli

Nano

Micro

Express the number 300,000,000 in scientific notation.

30 x 10^7

3 x 10^9

3 x 10^7

3 x 10^8

What is the result of (7.5 x 10^6) x (2.0 x 10^2)?

1.5 x 10^8

1.5 x 10^9

14.2 x 10^8

15 x 10^8

Express the measurement 0.00000567 in scientific notation.

56.7 x 10^-8

5.67 x 10^-6

5.67 x 10^-5

0.567 x 10^-4

How would you divide (3.6 x 10^5) by (1.2 x 10^2)

30 x 10^2

3 x 10^3

0.3 x 10^3

3 x 10^4

How many milliliters are there in a liter?

100

10000

1000

10

If a gas occupies 1200 cm3 at STP, what is its volume in liters?

12000

12

1.2

0.12

If a liquid has a mass of 5000 grams, what is its weight in kilograms?

50000

5

50

500

A chemical reaction produces 0.3 mol/L of a compound. What is this concentration in mmol/L?

30

300

3000

3

How many seconds are in 8 hours?

14400 seconds

3600 seconds

480 seconds

28800 seconds

How many grams are in 2.5 kilograms?

25 grams

250 grams

200 grams

2500 grams