Final Review

Front

You should never ______ chemicals in the lab.

Back

taste, touch, smell, all of the above

Front

How much heat is required to raise the temperature of 8.0 g of water by 10.0°C? The heat capacity of water is 4.184 J/g°C.

Back

335 J

Front

When in the lab...

Back

long sleeves and loose clothing should be rolled up, closed toe shoes should be worn, long hair should be pulled back, all of the above

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass is called?

Back

Nucleus

Front

What is the formula for calculating heat energy (Q)?

Back

Q = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature.

Front

What is the definition of specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1°C.

Front

What safety equipment should be worn in the lab?

Back

Safety goggles, gloves, and lab coats.

Front

What is the purpose of a fume hood in a laboratory?

Back

To ventilate hazardous fumes and protect the user from inhaling toxic substances.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.