Matter and Periodic table vocab

Question 1

Matter

Answer 1

Matter- anything that has mass and takes up space.

Question 2

Atom

Answer 2

Atom- the smallest piece of an element that still has the properties of that element.

Question 3

Element

Answer 3

Element- a substance that cannot be broken down into a simpler substance by ordinary means. Example: hydrogen.

Question 4

Mixture

Answer 4

Mixture- contains more than one element or compound spread among each other. Mixtures have the properties of the substances they are made of. Mixtures can be separated without a chemical change, example by filtering.

Question 5

Compound

Answer 5

Compound- made of two or more different kinds of atoms joined together (by a chemical reaction). Compounds have properties which are different from those of the elements they are made of.

Question 6

Physical Change

Answer 6

Physical Change- change where a physical property of matter is altered, but the substance remains the same kind of matter.

Question 7

Chemical Change

Answer 7

Chemical Change- change matter undergoes when it turns into a new substance.

Question 8

Atomic Number

Answer 8

Atomic Number- elements are arranged in order by their atomic number. The atomic number represents the number of protons in the nucleus of the atom/element.

Question 9

Atomic Mass

Answer 9

Atomic Mass (weight)- the number of protons and neutrons in the nucleus of an atom. (rounded to the nearest whole number for our class.)

Question 10

Proton

Answer 10

Proton- a positively charged subatomic particle inside the nucleus of an atom.

Question 11

Neutron

Answer 11

Neutron- a neutral subatomic particle inside the nucleus of an atom.

Question 12

Electron

Answer 12

Electron- a negatively charged subatomic particle found outside of the nucleus of an atom.

Question 13

Nucleus

Answer 13

Nucleus- the center of an atom where protons and neutrons are located and contains the majority of mass for an atom.