Science

Question 1

Baking soda, road salt, and water

Answer 1

These were a chemical reaction because they are both soluble in water but when mixed together they inflated the bag and made it warm

Question 2

Magnesium burn

Answer 2

The magnesium was lit on fire fire cannot exist without oxygen. This oxidized the magnesium and formed magnesium oxide. There was a clear a color change from solid gray to soft white

Question 3

Copper square surrounded by vinegar

Answer 3

A green solid formed on the copper when the time was given similar to the Statue of Liberty. The vinegar gas was trapped inside the cup

Question 4

Electrolysis 

Answer 4

Electricity is breaking apart the water molecules. The two test tubes collected gases. The one with more gas collected hydrogen and the one with less collected oxygen

Question 5

Making soap

Answer 5

Students should identify that combining fat rubbing alcohol and sodium hydrogen hydroxide made a new substance soap

Question 6

Copper chloride

Answer 6

The aluminum foil dissolved in the copper chloride there was a color change in the temperature change

Question 7

True or false is kool aid being heated a chemical reaction

Answer 7

False because because it’s just a phase change

Question 8

What is a product

Answer 8

A product is a substance on the right side of a Chemical formula these are the results of a chemical reaction

Question 9

What is a reactant

Answer 9

A reactant is a substance on the left side of the chemical formula these are what is there before a chemical reaction occurs

Question 10

Make a claim on why copper square and vinegar is a chemical reaction.

Answer 10

The cat the square and vinegar lab is a chemical reaction because A solid had formed on the copper square

The claim must be one sentence and has to be testable

Question 11

No new elements appear in chemical equation

Answer 11

There must be a equal amount on both side

Question 12

Scientific principle number one

Answer 12

Properties are unique characteristics that help identify a substance and distinguish one substance from another

Question 13

Scientific principle two

Answer 13

A substance is made of only one type of material (atoms or molecules) all the way through

Question 14

Scientific principle number three

Answer 14

A mixture is made of more than one substance or more than one type of atom or molecule

Question 15

Scientific principle number four

Answer 15

Solubility is the capacity of one substance to dissolve in another substance

Question 16

Scientific principle number five

Answer 16

Hardness and melting point are both properties of substances. Melting point is the temperature at which a solid substance starts to become a liquid

Question 17

Scientific principle number six

Answer 17

Properties of a given substance are the same regardless of the amount of substance

Question 18

Scientific principle number seven

Answer 18

Density is the mass in a set volume of a substance. It is calculated mathematically by determining the ratio of the mass of a sample to the volume it occupies.

Question 19

Scientific principle 12

Answer 19

A chemical reaction is the process of one substance breaking down or two or more substances interacting in their atoms combine in new ways to form new substances with different properties from the old substances

Question 20

What are chemical reactions

Answer 20

They are any time that you have bonds being formed or broken between atoms or molecules.

Question 21

Why is energy an important thing

Answer 21

Energy you apply to the system- the more that they’re going to bounce around, the more that they’re going to interact with each other, the more reactants you put in, the more chance that they’re going to bounce around and be able to react with each other

Question 22

Water

Answer 22

Could be a molecule or compound

Question 23

Compound

Answer 23

Made of two or more elements