Final exam review

Which safety rule is MOST important when smelling the product of a chemical reaction?

• Hold with Tongs

• Use a wafting motion

• Wear closed-toe shoes

• Keep nose directly above open container

Organisms that use energy from the sun to make their own food are called

• carnivores

• conusmers

• ominivores

• producers

Tags

NGSS.MS-LS1-6

The atomic number of magnesium is 12. This means that its nucleus must contain

• 6 protons and 6 neutrons

• 6 neutrons and 6 electrons

• 12 neutrons and no protons

• 12 protons and no electrons

Tags

NGSS.MS-PS1-1

What is the smallest unit that can carry on all functions of life?

• cells

• elements

• molecules

• organelles

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The periodic table is organized by

• atomic mass

• atomic size

• atomic number

• atomic periodicity

Which is true of covalent bonds

• They share electrons in bonds.

• They are electrically charged

• They are good conductors in water.

• They are usually made of a metal and a nonmetal

Tags

NGSS.MS-PS1-1

Which is the strongest acid?

• bleach 10

• blood 8

• saliva 6

• lemon juice 4

In an energy pyramid, which level has the most energy?

• bottom- producers

• level 1 consumer

• level 2 consumer

• top - tertiary consumer

Tags

NGSS.MS-LS2-3

Which sub-atomic particles is positively charged and found in the nucleus?

• proton

• neutron

• electron

• beta particle

Where are nonmetals located on the periodic table?

• middle

• upper left corner

• lower left corner

• upper right corner