Chemistry Midterm

What happens to matter during a chemical reaction?

• Matter is neither destroyed or created

• Some matter is destroyed

• Some matter is created

• Some matter is destroyed and some is created

Which is an example of Matter?

• energy

• rain

• an idea

• a dream

Which best describes matter?

• Matter can always be seen, but sometimes it cannot be heard.

• Matter is anything that has both mass and volume.

• Matter is the ability to do work or make reactions happen.

• Ideas and energy are matter, but they do not have mass.

Which unit is used to measure the volume of liquids?

• grams

• milliliters

• centimeters

• pounds

CaCl₂ is an example of ____________

• A phase

• an element

• a metal

• a compound

Which statement describes a proton?

• The dense positively charged structure found in the center of the atom.

• A particle that does not have a charge found in the nucleus of an atom.

• a particle with a negative charge found outside the nucleus of an atom.

• A particle with a positive charge found in the nucleus of an atom.

Which statement describes a neutron?

• The dense positively charged structure found in the center of the atom.

• A particle that does not have a charge found in the nucleus of an atom.

• A particle with a negative chargefound outside the nucleus of an atom.

• A particle with a positive charge found in the nucleus of an atom.

Which statement describes an electron?

• The dense positively charged structure found in the center of an atom.

• A particle that does not have a charge found in the nucleus of an atom.

• A particle with a negative charge found outside the nucleus of an atom.

• A particle with a positive charge found in the nucleus of an atom.

How many protons does the element Beryllium, Be< have?

• 4

• 3

• 9

• 9.012

How many neutrons does the element Beryllium, Be, have?

• 4

• 5

• 9

• 9.012

Tags

NGSS.MS-PS1-1