Elements & Atoms

Front

Which of the following BEST describes the nucleus of an atom? Options: The nucleus contains only electrons and is negatively charged., The nucleus contains protons and neutrons, is positively charged, and is dense., The nucleus is located outside the atom and has no charge., The nucleus is made up of only protons and is very light.

Back

The nucleus contains protons and neutrons, is positively charged, and is dense.

Front

Which of the following images shows the nucleus of the atom? The yellow parts. The blue parts in the center. The red parts in the center. The red AND blue parts in the center.

Back

The red AND blue parts in the center.

Front

Which of the following images shows the electrons of the atom? The yellow parts, The blue parts in the center, The red parts in the center, The red AND blue parts in the center.

Back

The yellow parts.

Front

Which of the following images shows the neutrons of the atom? The yellow parts. The blue parts in the center. The red parts in the center. The red AND blue parts in the center.

Back

The red parts in the center.

Front

Which of the following images shows the protons of the atom? The yellow parts. The blue parts in the center. The red parts in the center. The red AND blue parts in the center.

Back

The blue parts in the center.

Front

In the image of the atom, why are the protons labeled with a plus sign?

Back

Protons are labeled with a plus sign because they have a positive charge.

Front

In the image of the atom, why are the electrons labeled with a negative sign?

Back

Electrons have a negative charge

Front

Is the nucleus positively charged or negatively charged?

Back

The nucleus is positively charged.

Front

What is the atomic number of chlorine?

Back

17

Front

What is the mass number of chlorine?

Back

35