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Matter Unit Scientific Notation
By PAKAMAS TONGCHAROENSIRIKUL
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25 questions
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Question 1
1.
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
Question 2
2.
Which of these is an example of a physical change?
Burning Wood
Digesting Food
Melting Ice
Rusting of Iron
Question 3
3.
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
Question 4
4.
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
Question 5
5.
Which of the following is a chemical change?
Melting ice
Boiling eggs
Evaporating water
Burning wood
Question 6
6.
What happens to atoms during a chemical change?
They're destroyed
Their number increases
They physically travel
They are rearranged into new substances
Question 7
7.
Which of the following is not a sign of a chemical change?
Change in shape
Change in color
Temperature change
Gas production
Question 8
8.
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
Question 9
9.
What is the SI unit for measuring temperature?
Degrees
Fahrenheit
Celsius
Kelvin
Question 10
10.
Which of the following is the SI unit for amount of substance?
Liter
Meter
Mole
Gram
Question 11
11.
What is the SI unit for time?
Hour
Minute
Day
Second
Question 12
12.
What is the metric prefix for 1,000?
Kilo
Mega
Micro
Milli
Question 13
13.
What metric prefix represents 10^-6?
Nano
Micro
Kilo
Mega
Question 14
14.
If a measurement is given in centimeters, which prefix is being used?
Deci
Deca
Centi
Kilo
Question 15
15.
Which prefix would be used to represent a billionth?
Mega
Milli
Nano
Micro
Question 16
16.
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
Question 17
17.
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
Question 18
18.
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
Question 19
19.
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
Question 20
20.
How many milliliters are there in a liter?
100
10000
1000
10
Question 21
21.
If a gas occupies 1200 cm3 at STP, what is its volume in liters?
12000
12
1.2
0.12
Question 22
22.
If a liquid has a mass of 5000 grams, what is its weight in kilograms?
50000
5
50
500
Question 23
23.
A chemical reaction produces 0.3 mol/L of a compound. What is this concentration in mmol/L?
30
300
3000
3
Question 24
24.
How many seconds are in 8 hours?
14400 seconds
3600 seconds
480 seconds
28800 seconds
Question 25
25.
How many grams are in 2.5 kilograms?
25 grams
250 grams
200 grams
2500 grams