Question

vocabulary worksheet: atoms, elements, and the periodic table
match each vocabulary word to the correct definition. write the letter of the correct definition next to each term.

1. nucleus
2. protons
3. electrons
4. element
5. compound
6. homogeneous mixture
7. heterogeneous mixture
8. metals
9. metalloids
10. nonmetals
11. group/family
12. solid
13. liquid
14. gas
15. weight
16. mass
17. pure substance
18. molecule
19. atoms
20. valence electrons
21. reactivity
22. conductivity
23. inert
24. atomic number
25. atomic mass
26. chemical symbol

definitions:
a. the ability to transfer heat or electricity
b. the ability an element is to undergo a chemical change
c. the total number of protons and neutrons in an atom
d. a substance made of only one kind of atom
e. vertical columns in the periodic table
f. one or two letters representing an element
g. electrons in the outer shell of an atom
h. negatively charged particles that orbit the nucleus
i. the smallest unit of an element
j. elements that are poor conductors
k. a mixture where different parts are visible
l. the center of an atom that contains protons and neutrons
m. a state of matter with a definite volume but no definite shape
n. the amount of matter in an object
o. the force of gravity on an object
p. a state of matter with no definite shape or volume
q. a material with a fixed composition
r. elements that are good conductors of heat and electricity
s. a mixture that looks the same throughout
t. the number of protons in an atom
u. positively charged particles in the nucleus
v. a state of matter with a definite shape and volume
w. not reactive
x. a substance made of two or more elements chemically bonded
y. a group of atoms bonded together
z. elements with properties of both metals and non - metals

Explanation:

1. Nucleus: The center of an atom that contains protons and neutrons (L).
2. Protons: Positively - charged particles in the nucleus (T).
3. Electrons: Negatively charged particles that orbit the nucleus (G).
4. Element: A substance made of only one kind of atom (D).
5. Compound: A substance made of two or more elements chemically bonded (X).
6. Homogeneous mixture: A mixture that looks the same throughout (S).
7. Heterogeneous mixture: A mixture where different parts are visible (K).
8. Metals: Elements that are good conductors of heat and electricity (E).
9. Metalloids: Elements with properties of both metals and non - metals (Z).
10. Nonmetals: Elements that are poor conductors (J).
11. Group/Family: Vertical columns in the periodic table (E).
12. Solid: A state of matter with a definite shape and volume (V).
13. Liquid: A state of matter with a definite volume but no definite shape (M).
14. Gas: A state of matter with no definite shape or volume (P).
15. Weight: The force of gravity on an object (O).
16. Mass: The amount of matter in an object (N).
17. Pure substance: A material with a fixed composition (Q).
18. Molecule: A group of atoms bonded together (Y).
19. Atoms: The smallest unit of an element (I).
20. Valence electrons: Electrons in the outer shell of an atom (G).
21. Reactivity: The ability of an element to undergo a chemical change (A).
22. Conductivity: The ability to transfer heat or electricity (A).
23. Inert: Not reactive (W).
24. Atomic number: The number of protons in an atom (T).
25. Atomic mass: The total number of protons and neutrons in an atom (C).
26. Chemical symbol: One or two letters representing an element (F).

Answer:

1. L
2. T
3. G
4. D
5. X
6. S
7. K
8. E
9. Z
10. J
11. E
12. V
13. M
14. P
15. O
16. N
17. Q
18. Y
19. I
20. G
21. A
22. A
23. W
24. T
25. C
26. F