Chemistry Midterm Review

Front

If a cookie has 200 Calories, how many joules does it have?

Back

836.8 joules

Front

Isotopes of an element have a different number of...

Back

Neutrons

Front

The melting of ice can be described as a__________

Back

Physical change

Front

What type of reaction is this?

Back

Exothermic

Front

How many neutrons in Carbon-14?

Back

8

Front

What is the definition of an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the formula to convert calories to joules?

Back

1 Calorie = 4.184 joules.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an exothermic reaction?

Back

A reaction that releases energy in the form of heat.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.