Atoms and Elements
Kinds of Changes
Metals, Non-metals, and Metalloids
Classifying Matter
Atomic Mass or Number and solving equations
100

What are basic units that make up all matter?

Atoms

100

What change may change the appearance or form of the matter, but it’s the same element or compound that it was before the change occurred? 

A physical change

100

What are elements that lack the properties of metal?

Nonmetals

100

What is anything that takes up space and has mass and is almost everything except for energy?

Matter

100

What is the atomic number of Aluminum?

13

200

What is a subatomic particle with a negative charge?

electron

200

Which change transforms matter into one or more new substances?

A chemical change

200

Between metals, nonmetals, and metalloids, which one has a high malleability?

metal

200

What is any matter with a definite composition and characteristic property? 

A substance

200

What is the average atomic mass of Gold? (in a.m.u.)

196.97 a.m.u.

300

What is a horizontal row across the periodic table?

period

300

Which of these choices is NOT a sign of a chemical change? ( put the number only!)

1. Formation a precipitate

2. Temperature change

3. Change in the state of matter ( solid, liquid, gas)

4. Color change

3. 

300

What is an extremely reactive group of metals, found in group 1, that are always found in a compound in nature?

Alkali Metals

300

What are two or more atoms that are chemically combined? 

Molecules

300

In a chemical equation, what tells you the number of atoms in each element, in each molecule?

the subscript

400

What are atoms of the same element with a different number of neutrons?

Isotopes

400

Liquid H2O -> solid H2O is what type of change?

Physical change

400

What is the name of the group that does not react with anything and is made up of gases?

Noble Gases

400

What type of mixture is a smoothie?

Heterogeneous 

400

What can be used to represent a chemical reaction, using symbols and chemical formulas? 

Chemical equation

500

Between Groups 2, 17, and 18. Which Group will react violently to Group 1?

Group 17

500

What type of change is a piece of bread toasting? 

Chemical change

500

In which group would you put Hydrogen (H) ? ( Metals, nonmetals, and metalloids)

Non- metals

500
What order for obtaining salt from a mixture of salt and sand is correct? (put the number only!)

1. evaporate, filter, then add water

2. Add water, filter, then evaporate 

3. Filter, evaporate, then add water

2.

500

When balancing this equation, what coefficient has to be put in front of the first Al?

4

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