Grade 7 *Final Exam 2023

Bases have this type of taste.

• sour
• sweet
• bitter

Which form of energy is stored in fuels such gas and oil?

• chemical energy
• radiant energy
• nuclear energy

What type of energy is found between the protons of an atoms within the nucleus of an atom?

• chemical energy
• electrical energy
• nuclear energy

When an acid and base of equal strengths is mixed this forms.

• hydroxide and hydronium ions
• a neutral substance- salt and water

A car slows down to turn. This motion can be best described as ________________.

• momentum
• acceleration
• velocity

Where in the atom are the neutrons found?

• electron cloud
• nucleus
• spinning around outside of the nucleus

The circled number represents the __________ of sodium.

• atomic mass
• atomic number

What are atoms made mostly of?

• protons
• neutrons
• empty space

The atomic mass of an element equals the ____________ .

• number of electrons
• number of protons + the number of neutrons
• the number of neutrons - the number of electrons

The elements found on the right side of a chemical equation are the

• isotopes
• products
• reactants