1st 6 Weeks, Chemistry

What are atoms?

• A particle of matter that uniquely defines a chemical element.

• The central and most important part of an object movement or group forming the bass for its activity and growth.

• A single electron or one of two or more electrons in the outer shell of an atom.

6. What charge do protons, electrons, and neutrons have?

• Subatomic particles with a positive charge, negative charge, and no charge.

• Subatomic particles with a positive charge, negative charge, and double negative charge.

• Subatomic particles with a positive charge, neutral charge, and negative charge.

7. Electron cloud is the region of a ________________ charge surrounding an atomic nucleus that is associated with an atomic orbital.

• positive

• neutral

• negative

8. Pick which word below fits best with the definition of the words.

Chemical properties are the charge of one/two/three types of matter into another type. Physical properties can be measured with/without changing the composition of matter.

• two and with

• one and without

• three and with

9. Groups on the periodic table are _______________ while periods are _______________ on the periodic table.

• vertical, horizontal

• horizontal, vertical

• up, down

10. What are molecules?

• A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

• A group of protons and neutrons bonded together, representing the largest unit of a physical compound that can take part in a chemical reaction.

• A group of hydrogen bonds together, representing the smallest and largest fundamental units of an element that can take part in a chemical and physical reaction.

11. Chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule.

• True

• False

12. The formula for a periodic function is

• f(x)=p(x+f)

• f(x)=f(x+p)

• f(x)=f(m+x)

13. Name the first element on the periodic table.

• Hydrogen

• Carbon

• Potassium

14. What are the building blocks of DNA?

• Nucleotides

• Carbohydrates

• Fatty Acids