Chemical Energy Part 1

Which of the following is an element?

• NaCl

• H20

• OH

• Mn

Interpret the formula: (NH4)2SO4

• nitrogen,hydrogen,oxygen,sulfur

• nitrogen-2, hydrogen-8,

  sulfur-1, oxygen-4

• neon-2,

  hydrogen-8,

  sulfur-1,

  oxygen-4

• neon-2,

  hydrogen-8,

  sodium-1, oxygen-4

Tags

NGSS.MS-PS1-1

How many periods are on the periodic table?

• 8

• 7

• 18

• over 100

Certain elements with similar chemical and physical properties are found in the same column in the periodic table of elements. These chemicals

• are in the same period.

• are in the same family.

• have the same number of electrons.

• have the same atomic mass number.

What does the law of conservation of matter state?

• The total mass of reactants is greater than the total mass of the products.

• The total mass of reactants is less than the total mass of the products.

• The total mass of reactants equals the the total mass of the products.

• Matter can't change form.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are the parts and charges of an atom?

• Protons(+), Neutrons(-), Electrons(o)

• Protons(+), Neutrons(o), Electrons(-)

• Protons(-), Neutrons(+), Electrons(o)

• Protons(o), Neutrons(-), Electrons(+)

Tags

NGSS.MS-PS1-1

Manganese is an element found on the ocean floor. It contains 25 protons and 30 neutrons. How many electrons are found in a neutral atom of manganese?

• 5

• 55

• 30

• 25

Tags

NGSS.MS-PS1-1

During a science lab investigating chemical reactions. Mrs.Gray's students placed an antacid tablet in a zip lock bag. They recorded the mass of the tablet, 25 grams, and the bag, 60 grams. Then they carefully added 50 grams of water and quickly sealed the bag. The tablet began to fizz and soon disappeared. The bag was filled with gas. If the mass of the liquid after the reaction is still 50 grams, (How much gas) is produced.

• 25 grams

• 50 grams

• 60 grams

• 95 grams

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which subatomic particles are located in the nucleus of an atom?

• Protons and electrons

• Neutrons and electrons

• Atom and neutrons

• Protons and neutrons

Tags

NGSS.MS-PS1-1

How are the elements arranged in the Periodic Table.

• Size

• Alphabetical order

• Increase in Atomic Number

• Discovery Date