Exam 1: Chemistry in Our Lives

The chemical used to make cans and foil is ________.

Solve for x: 3x + 8 = -7

The substances released when tissues are injured are ________.

-2 x 6 /-3 = 4

One example of a chemical used in toothpaste is ________.

Evaluate -12 - (-17)= ________.

The first step in the scientific method is to ________.

In the number 12.345,the 4 is in the ________ place.

It is a good idea to wait until the night before an exam to start to study.

Titanium dioxide is a chemical used in toothpaste to ________.

Express each of the following numbers using scientific notation. -0.000 000 050

An animal shelter has 12 dogs and 8 cats.Cats are 40% of the animals.

Calcium carbonate is used to sweeten toothpaste.

Which of the following is not a chemical?

Express each of the following numbers using scientific notation. -351 000 000 000

If a negative number is divided by another negative number,the answer will be a positive number.

Working with a group of students can help you learn chemistry.

For the equation 4 x (-3)/-2 = ________.

Any material used in or produced by a chemical reaction is a ________.

The product of (-4)× (-5)is ________.