Show:
Law of Conservation of Matter
States of Matter
Physical and Chemical Properties
The Periodic Table
Compounds and Mixtures
100
The reactants must always be _________ to the products.
What is equal
100

What are the four states of matter? Describe how the molecules move in each.

solid - vibrate in a fixed shape

liquid - slide past eachother 

gas- fast, freely moving 

plasma - electrically charged (ionized), move with extremely high energy

100

What is density?

How much mass in a given volume

100
Which is the most reactive gas and metal on the periodic table? Which groups do they belong to?
What is alkali metals Group 1, halogens Group 17
100

Which symbolizes a molecule? A. Ne B. Fe C. H2 D. H20

What is D. H20

200
How many O atoms must be present on the product side of the following reaction H2 + O ->
What is 1oxygen.
200

Which statement is true about the molecules in ice compared to the molecules in water vapor? A. molecules in ice have more energy than molecules in gas. B. The molecules in ice contain different atoms than the molecules in water vapor. C The molecules in ice are less free to move than the molecules in water vapor.

What is C.

200

What are the 5 signs of a chemical change?

1. Change in color · 2. Change in odor · 3. Production of a gas · 4. Formation of a precipitate · 5. Change in energy.

200
The atomic number is the same as the number of what?
What is the number of protons
200
When one carbon and two oxygen combine what forms? A. a different atom B. a different element C. a molecule D. a neutron
What is C. a molecule
300

If reaction starts with 20g of reactants it should produce...

What is 20 g of products.

300

What is responsible for the difference in molecule speed?

What is heat

300

If a diet coke is floating on water what can you say about its density compared to the water its in?

What is the diet coke is less dense than the water it is in.

300

Name one characteristic of each... metal, nonmetal, and metalloid.

Metal- conductor

nonmetal- poor conductor

metalloid- semiconductor

300
Magnesium can combine with other substances, but cannot be changed into a simpler substance by an ordinary chemical process, Magnesium is classified as? A. a compound B. a mixture C. an acid D. an element
What is D.
400

Which of the following are PRODUCTS?
H2O + CO2 → HCO + HO

What is HCO and HO .

400

Heat causes liquid to change to water vapor by? A. filling the spaces between molecules B. causing molecules to move faster and farther apart C. increasing attraction between molecules.

What is B.

400

Vinegar reacts with baking soda to produce bubbles of gas. What does this tell us about the change?

What is it’s a chemical change because a new substance (carbon dioxide gas) forms?

400

The element Argon has an atomic number of 18 and an atomic mass of 40 . The element phosphorous has an atomic number of 15 and an atomic mass of 31 . How many more electrons does Argon have than Phosphorous.

What is 3 electrons

400

Kool-Aid is a ____ mixture and trailmix is a _____ mixture.

What is homogeneous and heterogeneous

500

Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?

What is 1100 g.

500

Which statement below is true? A. Heat causes liquids to contract B. Heat causes liquids to expand C Heat causes air to leave gast tanks D. Heat causes air to flow into gas tanks

What is B

500

Is density a physical or chemical property?

What is a physical property.

500

How many protons, neutrons, and electrons does Na have. Na has an atomic number of 11 and atomic mass of 23.

What is 11 protons, 11 neutrons, and 12 neutrons

500

Why are all substance on the periodic table classified as elements?

What is because they can not be broken down into other substances.