What happens to a substance during a physical change?
Which of these is an example of a physical change?
How would you best describe paper tearing: a physical or chemical change?
Why can physical changes be reversed?
Which of the following is a chemical change?
What happens to atoms during a chemical change?
Which of the following is not a sign of a chemical change?
Why is digestion in humans considered a chemical change?
What is the SI unit for measuring temperature?
Which of the following is the SI unit for amount of substance?
What is the SI unit for time?
What is the metric prefix for 1,000?
What metric prefix represents 10^-6?
If a measurement is given in centimeters, which prefix is being used?
Which prefix would be used to represent a billionth?
Express the number 300,000,000 in scientific notation.
What is the result of (7.5 x 10^6) x (2.0 x 10^2)?
Express the measurement 0.00000567 in scientific notation.
How would you divide (3.6 x 10^5) by (1.2 x 10^2)
How many milliliters are there in a liter?
If a gas occupies 1200 cm3 at STP, what is its volume in liters?
If a liquid has a mass of 5000 grams, what is its weight in kilograms?
A chemical reaction produces 0.3 mol/L of a compound. What is this concentration in mmol/L?
How many seconds are in 8 hours?
How many grams are in 2.5 kilograms?